Import of text-file lost history
This bug was already described in https://github.com/ether/etherpad-lite/issues/3560#issuecomment-614098168
When importing a file, all the history is overwritten with the imported file, after doing the import, the using the time slider displays the versions, but the text is not there.
We discovered this on this board: https://board.net/p/TpLenguaMateo , the user, a 13th year old student used import instead of export (not English native) and lost the work.
Regards.