Since I have moved from version 5.309 to 5.405, I have noticed that whatever the text you input in EDIT / EDIT PB ATTRIBUTES / PB CLASS / TITLE and save + close the fem, this text is not saved and so, when you re-open the same fem file afterwards, you still have the default string "A new Feflow problem", which I think is a bug of version 5.405 (as this was ok in 5.309).
Loic