The parent files have not been destructively edited. When I stretch the region, I easily recover the entirety of the original region.
So, according to your list:
1. What parent audio file the region refers to. - This remains intact, as does the start position on the timeline
2. Sample number inside the audio file where the region starts. - This has been lost
3. Sample number inside the audio file where the region ends. - This has been lost
What I would like to is readjust (input manually if necessary) the sample numbers for start and end points, which I can copy from the adjacent tracks, if there is a way to access them. Thanks for any help.