Sounds like wherever you're reading the POST field data you're either wiping it out or you're not actually storing the collected updates and it's storing blank data instead.
So either your parsing of POST inputs is wrong, or whatever variables you're passing to the code that stores the data to the database are wrong or blank. Maybe you need to check all the data to see what you're collecting and what you're writing, and figure out what's causing the difference.
Have fun supporting it!




