I've been using the new arrangement feature in PM to prepare slideshow presentations. Generally, it works great. On a few occasions, however, I seem to have "lost" the arrangement I was working on. I was able to restore it from a backup version of the .pmarrangement file, but otherwise, this would have been quite painful.
I suspect I was in the default "filename" order and then attempted to move an image, thus replacing the prior arrangement. With one fat-fingered mouse move, all prior arrangement work is wiped out.
Kirk, would it be possible to prevent accidentally over-writing an existing arrangement?
Perhaps the following rules could help:
When an image is attempted to be dragged AND the sort order is NOT "arrangement":
1. If no arrangement exist, create a new .pmarrangement.dat file and switch the sort order to "arrangement" (as present in PM 4.5.2)
2. If there is an existing .pmarrangement.dat file, prompt upon attempting to drag a photo "An arrangement already exists for this folder. Would you like to Switch to the existing arrangement or create a new arrangement (warning: this will delete the existing arrangement)?"
2a if SWITCH: cancel attempted drag/drop action and switch to sort order "Arrangement" using the existing .pmarrangement.dat file.
2b if NEW: create a new .pmarrantement.dat file based on the current sort order, then switch sort order to "Arrangement" and permit the drag/drop action.
If at some point multiple arrangements are permitted per folder, the warning in #2 can be dropped.
A totally different way to go would be to require an explicit "save current arrangement" command before the .pmarrangement.dat file is over-written.
Regards,
Kevin