Book infor saving problems

I just want to inform.

I do not know why, but some times Book infor do not save data (contributors or license information i´m working with)

If you can come up with steps to debug this or reproducible circumstances under which the issue occurs, that would be useful. As is this gives me nothing to work with.

I know. but I´m testing finding a pattern. If i have something more useful I will let you know.