Export Application (AppWithinMinutes) and their underlying Children

hello - and happy belated new year.

we are (slooowly) moving toward migrating to the same version of the wiki and then do the upgrade to V12.
my questions:

  1. i tested the migration and when importing the xar into the new instance of xwiki, i got a message like this “856 pages imported, 0 skipped, 833 errors” and i was a bit o_O puzzled. Is there a way to make sure that everything has been imported correctly? or a check on the count of pages? i googled but couldn’t find anything particular. is there a skript i can use for checking the count of pages and timestamps in the old and new installation for sake of peace of mind? (note: i can’t have the admin tool application installed)
  2. which import options do you suggest? i will import the xwiki pages to an empty wiki, but i could also try to import again and again after that first time?
  • radio buttons: Add a new version to the existing page (if different) / Replace the page history with the history from the package / Reset history to version 1.1
  • checkbox: Import as backup package → gives me this error

thank you for your help!
Mary