Hi Ms.Nitnaware,
for your 1st question, as far as I had discussed with my project mates, yes it is correct since the reverse image seems to interfere with the deletion itself, please do check if it is available in the archives. ( for more ideas (https://scn.sap.com/thread/2019605)
the 2nd question, I am not very sure but I can only assume there should be a background program like the one indicating the GI status in VBFA table.
Hope I am helping you with the issue.
Regards
Vijay