Worse than that, LP notes are multi line which makes importing a bloody nightmare! Especially if you have any CSV characters in the note.
I had to modify the native CSV with some vim magic to add a line delimiter for each record so it allowed for spanning over multiple lines in order to successfully import each entry - which also required the importer to allow for an additional EOR marker.
Even then there wasn't a 1:1 column match between pw apps.
Without this step though all sorts of hell breaks loose, and if you don't notice the columns got out of sync during import because a note had a few commas in it what good is it to you really. It's a hell of a mess that you may not notice until its too late.
There should also be a verify feature for any import that can query the original source via some API calls - or use that to do the import. Of course nobody is going to provide that because it means users can leave their ecosystem too easily - but the other thinking is customized backups to a PGP destination suitable for direct import via the sale API calls.
This was for LP to KeePass BTW.