Hi @anon24200216 upon import you're losing some precision as this field is being detected as number (correctly), but is bigger than 15 digits. Unfortunately, applying the plain text format after the precision has been lost will not bring it back. There are a couple of ways I could think of working around this: 1/ In your CSV, add an alphabet to this column so upon import Honeycode treats it as plain text rather than number. or 2/ set the format to plain text and then copy and paste the data from CSV. Either of these options should work. I'll also make a note for my colleagues working on this area to improve on this experience.