Issue importing CSV data
Today I ran into a major headache when I tried to import a CSV file into Proton Sheets. My goal was to "add" data to my spreadsheet. When I imported the file, all the previous data was overwritten. I couldn’t recover what I had, not even by using “Undo” or selecting a previous version. Basically, I lost everything.
I was able to replicate this issue. I created a demo Proton Sheet and some demo CSV files to import. I made some video captures showing how the previous data is altered when importing the CSV, even when choosing the options "replace the selected cell" (previously selecting an empty cell at the end of the current data), "import to a new sheet," and "replace the current sheet" (previously creating a new empty sheet).
I hope you can tell me what I'm doing wrong here or help to fix an eventual bug.