As suggested I have upgraded to 4.4.1 and have the same problem. However there is further info below that should allow anyone to reproduce the problem. I.ve just done it on 3 machines.
Original Posted Problem
Would appreciate help on this if anyone has seen the problem.
I use ACR 4.3 on windows XP Pro with CS3, 4 gig ram.
My normal practice is to copy my CF cards to folders on the desktop, then
drag each folder to Bridge to rough select the keepers.
I then open the remaining images in ACR and make further deletions if
When I delete images from the ACR screen, the X appears as normal but the
sidecar.xmp file is not been deleted, only the NEF deletes.
After deleting the X images the corresponding .xmp files have gone - problem fixed I thought!!
If you now drag the same folder to bridge for the second time, then open all images in ACR, make any alteration to all of them, then delete for example 3 images, the X appears and the NEF file is deleted, but the dreaded sidecar.xmp files are still in the folder for those files deleted on the second pass.
I,ve tried this a few times and it always gives the same result.
Hope this makes sense and someone else ca reproduce the same problem