Importing csv - skipped import

Hi. I want to use the Trezor password manager as a backup password system. I exported csv from my Bitwarden account (although I don’t like this insecure method). However, the csv import in Trezor password manager failed. Out of some 250 passwords, only one was imported, 249 were skipped. Tried several times. Connected with Dropbox. Using Trezor One