Newly added field

HI,

We used to have a form which has around 10 fields in it.
Later, a new field(it accepts just yes or no) was added into it.

For all the new records that were created after the new field was inserted, it is working fine.
But for the old records(the existing ones if we try to edit), we are seeing an error "cannot find record to be updated".

I've run the query in SSMS, and I've seen the new field with data like 1 or 0 or NULL.

Could you please let me know what can be done to solve this issue?

Thanks