I'm working with an old app written in FP2.6

It uses a 16 digit number as the key field for accounts.

This works fine as long as the account number does not end in 9. When I look at an account number in VFP that ends in 9, it's rounded up one number... this is bad!!!

Even in a browse screen, I can be looking at the account number field and all the numbers look fine, but when I highlight an account number ending in 9, it's changed to the next highest number. Then when I arrow up or down off that number, it changes back to the proper number!

What gives here ???

As usual, TIA