in another bug i told you there is a long process :
so finally, i ended it, canceled using your CANCEL button but after that, there are bugs :
- my library have changes. i can see new albums-releases added (whereas i canceled the add!). : compare the counter in image1 and image2
- them, the window gauge in task bar is still running (filling liek the percent counter) : you can see that in my screencap image1
This is a known issue which we warn for in the documentation.
Helium has worked like this since long, but we are reviewing an improvement of this. The biggest issue with having a proper rollback function depends on how far you have come in the adding process, since this might affect speed (much).
How about making "backup copies" of all tables?
That's why I mentioned that performance is an issue - doing this on a database with over 100k items will create a performance dip
This will be improved/fixed in the upcoming release.