When I edit an image from Lightroom 5.7 in an external editor such as Photoshop or Portraiture I want the original image to keep its place in the filmstrip and I want the returned edited image to join it in a stack at that location. Instead, the original image gets moved to the end of the filmstrip and the edited one is returned to stack with it at the end of the filmstrip.
Upon Import I don't know if my images are sorted by filename or time created because both are in the same order coming from the camera.
LR 5.7 CC, Windows 7 Home Premium 64-bit.
Yes, "edit in ..." often results in the new file being out of sort order. I usually work around this by going to the Library module, then back to the Develop module. This usually gets the items back into the correct sort order.
Check the Sort Order in the Library. It may be set to Added Order. Try Capture Time...