Liquify mixes results from two different steps, and outputs them in a single file.  Here are two examples.

Steps to repeat:

1. Open file in liquify.  Perform liquification.  (Extreme changes will slow the computer down and make it easier to repeat these results.)
2. Click "ok"
3. Wait while the computer processes the results.  (Watch the progress bar.)
4. Before the progress bar reaches the end, click "cancel."
5. You are now returned to the liquify plugin.  Click "restore all" to reset the image.
6. Make your new liquify changes.
7. Click OK, and let the computer finish processing the liquification this time.

As you can see, the blocks that completed processing from the first liquify pass have been saved, and are merged into the image from the second pass at liquification.

Happy to help if there are any further questions or requests.

System Info:

Adobe Photoshop Version: 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00) x64

Operating System: Windows 7 64-bit

Version: 6.1 Service Pack 1

System architecture: Intel CPU Family:6, Model:10, Stepping:4 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, HyperThreading

Physical processor count: 4

Logical processor count: 8

Processor speed: 3102 MHz

Built-in memory: 12278 MB

Free memory: 6424 MB

Memory available to Photoshop: 10991 MB

Memory used by Photoshop: 60 %

Image tile size: 128K

Image cache levels: 4

OpenGL Drawing: Enabled.

OpenGL Drawing Mode: Advanced

OpenGL Allow Normal Mode: True.

OpenGL Allow Advanced Mode: True.

OpenGL Allow Old GPUs: Not Detected.

Video Card Vendor: ATI Technologies Inc.

Video Card Renderer: ATI Radeon HD 5800 Series

Display: 2

Display Bounds:=  top: 0, left: 0, bottom: 1600, right: 2560

Display: 1

Display Bounds:=  top: 0, left: -1200, bottom: 1600, right: 0

Video Card Number: 1

Video Card: ATI Radeon HD 5800 Series

OpenCL Version:

Driver Version: 8.930.0.0

Driver Date: 20111205000000.000000-000

Video Card Driver: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,ati umd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdv a,atiumd6a.cap,atitmm64.dll

Video Mode: 1600 x 1200 x 4294967296 colors

Video Card Caption: ATI Radeon HD 5800 Series

Video Card Memory: 1024 MB

Video Rect Texture Size: 16384

Serial number: Tryout Version

Application folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\

Temporary file path: C:\Users\Gavin\AppData\Local\Temp\

Photoshop scratch has async I/O enabled

Scratch volume(s):

  Startup, 223.5G, 74.5G free

Required Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Required\

Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Plug-ins\

Additional Plug-ins folder: not set

Installed components:

   A3DLIBS.dll   A3DLIB Dynamic Link Library   9.2.0.112  

   ACE.dll   ACE 2012/01/18-15:07:40   66.492997   66.492997

   adbeape.dll   Adobe APE 2012/01/25-10:04:55   66.1025012   66.1025012

   AdobeLinguistic.dll   Adobe Linguisitc Library   6.0.0  

   AdobeOwl.dll   Adobe Owl 2012/02/09-16:00:02   4.0.93   66.496052

   AdobePDFL.dll   PDFL 2011/12/12-16:12:37   66.419471   66.419471

   AdobePIP.dll   Adobe Product Improvement Program   6.0.0.1642  

   AdobeXMP.dll   Adobe XMP Core 2012/02/06-14:56:27   66.145661   66.145661

   AdobeXMPFiles.dll   Adobe XMP Files 2012/02/06-14:56:27   66.145661   66.145661

   AdobeXMPScript.dll   Adobe XMP Script 2012/02/06-14:56:27   66.145661   66.145661

   adobe_caps.dll   Adobe CAPS   5,0,10,0  

   AGM.dll   AGM 2012/01/18-15:07:40   66.492997   66.492997

   ahclient.dll    AdobeHelp Dynamic Link Library   1,7,0,56  

   aif_core.dll   AIF   3.0   62.490293

   aif_ocl.dll   AIF   3.0   62.490293

   aif_ogl.dll   AIF   3.0   62.490293

   amtlib.dll   AMTLib (64 Bit)   6.0.0.75 (BuildVersion: 6.0; BuildDate: Mon Jan 16 2012 18:00:00)   1.000000

   ARE.dll   ARE 2012/01/18-15:07:40   66.492997   66.492997

   AXE8SharedExpat.dll   AXE8SharedExpat 2011/12/16-15:10:49   66.26830   66.26830

   AXEDOMCore.dll   AXEDOMCore 2011/12/16-15:10:49   66.26830   66.26830

   Bib.dll   BIB 2012/01/18-15:07:40   66.492997   66.492997

   BIBUtils.dll   BIBUtils 2012/01/18-15:07:40   66.492997   66.492997

   boost_date_time.dll   DVA Product   6.0.0  

   boost_signals.dll   DVA Product   6.0.0  

   boost_system.dll   DVA Product   6.0.0  

   boost_threads.dll   DVA Product   6.0.0  

   cg.dll   NVIDIA Cg Runtime   3.0.00007  

   cgGL.dll   NVIDIA Cg Runtime   3.0.00007  

   CIT.dll   Adobe CIT   2.0.5.19287   2.0.5.19287

   CoolType.dll   CoolType 2012/01/18-15:07:40   66.492997   66.492997

   data_flow.dll   AIF   3.0   62.490293

   dvaaudiodevice.dll   DVA Product   6.0.0  

   dvacore.dll   DVA Product   6.0.0  

   dvamarshal.dll   DVA Product   6.0.0  

   dvamediatypes.dll   DVA Product   6.0.0  

   dvaplayer.dll   DVA Product   6.0.0  

   dvatransport.dll   DVA Product   6.0.0  

   dvaunittesting.dll   DVA Product   6.0.0  

   dynamiclink.dll   DVA Product   6.0.0  

   ExtendScript.dll   ExtendScript 2011/12/14-15:08:46   66.490082   66.490082

   FileInfo.dll   Adobe XMP FileInfo 2012/01/17-15:11:19   66.145433   66.145433

   filter_graph.dll   AIF   3.0   62.490293

   hydra_filters.dll   AIF   3.0   62.490293

   icucnv40.dll   International Components for Unicode 2011/11/15-16:30:22    Build gtlib_3.0.16615  

   icudt40.dll   International Components for Unicode 2011/11/15-16:30:22    Build gtlib_3.0.16615  

   image_compiler.dll   AIF   3.0   62.490293

   image_flow.dll   AIF   3.0   62.490293

   image_runtime.dll   AIF   3.0   62.490293

   JP2KLib.dll   JP2KLib 2011/12/12-16:12:37   66.236923   66.236923

   libifcoremd.dll   Intel(r) Visual Fortran Compiler   10.0 (Update A)  

   libmmd.dll   Intel(r) C Compiler, Intel(r) C++ Compiler, Intel(r) Fortran Compiler   10.0  

   LogSession.dll   LogSession   2.1.2.1640  

   mediacoreif.dll   DVA Product   6.0.0  

   MPS.dll   MPS 2012/02/03-10:33:13   66.495174   66.495174

   msvcm80.dll   Microsoft® Visual Studio® 2005   8.00.50727.6195  

   msvcm90.dll   Microsoft® Visual Studio® 2008   9.00.30729.1  

   msvcp100.dll   Microsoft® Visual Studio® 2010   10.00.40219.1  

   msvcp80.dll   Microsoft® Visual Studio® 2005   8.00.50727.6195  

   msvcp90.dll   Microsoft® Visual Studio® 2008   9.00.30729.1  

   msvcr100.dll   Microsoft® Visual Studio® 2010   10.00.40219.1  

   msvcr80.dll   Microsoft® Visual Studio® 2005   8.00.50727.6195  

   msvcr90.dll   Microsoft® Visual Studio® 2008   9.00.30729.1  

   pdfsettings.dll   Adobe PDFSettings   1.04  

   Photoshop.dll   Adobe Photoshop CS6   CS6  

   Plugin.dll   Adobe Photoshop CS6   CS6  

   PlugPlug.dll   Adobe(R) CSXS PlugPlug Standard Dll (64 bit)   3.0.0.383  

   PSArt.dll   Adobe Photoshop CS6   CS6  

   PSViews.dll   Adobe Photoshop CS6   CS6  

   SCCore.dll   ScCore 2011/12/14-15:08:46   66.490082   66.490082

   ScriptUIFlex.dll   ScriptUIFlex 2011/12/14-15:08:46   66.490082   66.490082

   tbb.dll   Intel(R) Threading Building Blocks for Windows   3, 0, 2010, 0406  

   tbbmalloc.dll   Intel(R) Threading Building Blocks for Windows   3, 0, 2010, 0406  

   TfFontMgr.dll   FontMgr   9.3.0.113  

   TfKernel.dll   Kernel   9.3.0.113  

   TFKGEOM.dll   Kernel Geom   9.3.0.113  

   TFUGEOM.dll   Adobe, UGeom©   9.3.0.113  

   updaternotifications.dll   Adobe Updater Notifications Library   6.0.0.24 (BuildVersion: 1.0; BuildDate: BUILDDATETIME)   6.0.0.24

   WRServices.dll   WRServices Friday January 27 2012 13:22:12   Build 0.17112   0.17112

   wu3d.dll   U3D Writer   9.3.0.113  

Required plug-ins:

   3D Studio 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Accented Edges 13.0

   Adaptive Wide Angle 13.0

   ADM 3.11x01

   Angled Strokes 13.0

   Average 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Bas Relief 13.0

   BMP 13.0

   Camera Raw 7.0

   Chalk & Charcoal 13.0

   Charcoal 13.0

   Chrome 13.0

   Cineon 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Clouds 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Collada 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Color Halftone 13.0

   Colored Pencil 13.0

   CompuServe GIF 13.0

   Conté Crayon 13.0

   Craquelure 13.0

   Crop and Straighten Photos 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Crop and Straighten Photos Filter 13.0

   Crosshatch 13.0

   Crystallize 13.0

   Cutout 13.0

   Dark Strokes 13.0

   De-Interlace 13.0

   Dicom 13.0

   Difference Clouds 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Diffuse Glow 13.0

   Displace 13.0

   Dry Brush 13.0

   Eazel Acquire 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Embed Watermark 4.0

   Entropy 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Extrude 13.0

   FastCore Routines 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Fibers 13.0

   Film Grain 13.0

   Filter Gallery 13.0

   Flash 3D 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Fresco 13.0

   Glass 13.0

   Glowing Edges 13.0

   Google Earth 4 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Grain 13.0

   Graphic Pen 13.0

   Halftone Pattern 13.0

   HDRMergeUI 13.0

   IFF Format 13.0

   Ink Outlines 13.0

   JPEG 2000 13.0

   Kurtosis 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Lens Blur 13.0

   Lens Correction 13.0

   Lens Flare 13.0

   Liquify 13.0

   Matlab Operation 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Maximum 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Mean 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Measurement Core 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Median 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Mezzotint 13.0

   Minimum 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   MMXCore Routines 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Mosaic Tiles 13.0

   Multiprocessor Support 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Neon Glow 13.0

   Note Paper 13.0

   NTSC Colors 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Ocean Ripple 13.0

   Oil Paint 13.0

   OpenEXR 13.0

   Paint Daubs 13.0

   Palette Knife 13.0

   Patchwork 13.0

   Paths to Illustrator 13.0

   PCX 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Photocopy 13.0

   Photoshop 3D Engine 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Picture Package Filter 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Pinch 13.0

   Pixar 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Plaster 13.0

   Plastic Wrap 13.0

   PNG 13.0

   Pointillize 13.0

   Polar Coordinates 13.0

   Portable Bit Map 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Poster Edges 13.0

   Radial Blur 13.0

   Radiance 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Range 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Read Watermark 4.0

   Reticulation 13.0

   Ripple 13.0

   Rough Pastels 13.0

   Save for Web 13.0

   ScriptingSupport 13.0

   Shear 13.0

   Skewness 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Smart Blur 13.0

   Smudge Stick 13.0

   Solarize 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Spatter 13.0

   Spherize 13.0

   Sponge 13.0

   Sprayed Strokes 13.0

   Stained Glass 13.0

   Stamp 13.0

   Standard Deviation 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Sumi-e 13.0

   Summation 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Targa 13.0

   Texturizer 13.0

   Tiles 13.0

   Torn Edges 13.0

   Twirl 13.0

   U3D 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Underpainting 13.0

   Vanishing Point 13.0

   Variance 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Variations 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Water Paper 13.0

   Watercolor 13.0

   Wave 13.0

   Wavefront|OBJ 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   WIA Support 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   Wind 13.0

   Wireless Bitmap 13.0 (13.0 20120305.m.415 2012/03/05:21:00:00)

   ZigZag 13.0

Optional and third party plug-ins: NONE

Plug-ins that failed to load: NONE

Flash:

   Mini Bridge

   Kuler

Installed TWAIN devices: NONE

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