I have texts that are in format 444444.444444, it is meant to be a plain text. Google Sheets detects it as number and shows only 0-1 decimals. I click Format -> Number -> Plain text, the result is the formatted number as text, i.e. without all the decimals. I found out that if I edit ' in front of the number, then format it to plain text, then remove the ', it formats it correctly. But I absolutely do not want to do this for each and every cell. I also can't click "Increase decimal places", because that adds zeros after all the numbers explicitly there, and I cannot know were the zeros there in the original text or not.
Preferably, I want a solution where I can click "do not format anything in this sheet in any way". If that's not possible, even doing it for one column would suffice.
Edit: I have imported the data from Google Analytics. An example sheet is here, perform the steps above to see the error.