Thanks Jef. My reply below.
Are you restoring a BPC 7.5 NW backup on a BPC 10.0 NW environment?
Yes
Before taking a backup of 7.5, first run the UJA_DATA_CHECKER program.
If you find errors, they should be fixed first before taking a backup.
Yes, there was no issue.
In BPC 10 system, which SP are you running and have you looked at note 1748232 ?
SP 15
You can also try to run the restore in the background, instead of foreground.
When chosen background, it does not allow to select the file path. Hence chosen foreground.
How long does the restore run? You might need to increase rdisp/max_wprun_time
It runs for couple of mins