Version 2.3.1 Mac M1 with and without Acceleration repeatable.
I placed(File->Place) an PDF File with 4 pages.
Made 3 copies with Command-C Command-V
Grouped all four.
Then I chose pages 1-4 in the ArtBoard setting in the context menu so that each PDF page was visible.
After saving, closing the document and reopening it, the page settings are random.
This is listed as fixed in the 2.3.0.2096 Beta Bug Fix List... but the problem still exists in both 2.3.1 and the 2.4.0 Beta...
Placed restricted PDF fails to draw when switching from passthrough to interpret