@ivek,
how do we get rid of the invisible movies - preferrably in one click?
It is more difficult, perhaps the closest way to optimize the database (
invisible only), but beware, before the do make a new folder and copy the backup file to a new folder, that you have a copy for backup if you might need to recover the database to its original state in the event that something goes wrong and they would then perhaps lost some relevant information (see image).
This is especially the case if it does not remove all the unseen movies and additionally use the function:
delete movie orphans or duplicates.
If this does not work, the next longer and more time-consuming option, namely to manually remove data in the Links box (depending on the skin).
Finally, manually removing residue movies namely one by one in the filter:
invisible.
It is best in settings unmark connection box, thereby to prevent the transfer and will not be invisible movies.