I accidentally deleted an additional field that I had for "location"

I have re-added the field with all the attributes and all seemed ok. However, if I do a report on old requests the location field is now blank for all old requests!

Is there anyway I can restore the old field and ensure that it is in the correct part of the table so that old requests will still have it in place?

I suspect that the new additional field has been added in a different table or a different part of a table hence why it is blank when I look at old requests