I have a database of 185 records. The record numbers are currently in a text field 'record no', Indexed, Auto-enter Serial, Required Value and Unique. When I sort on record no, the order result is not serial but reads the first digit, so record no 3 is followed by record no 30, then 31, etc, 39 is followed by 4, etc, as it should in a text field. However, I want to sort 1 - 180, so presumably need to change the field from text to numbers. How can I do this without losing the data?