The only thing you can do once you've move to the main form is to delete the
subform data, or write changes to the data. You cannot undo it. If you use
unbound forms, you can write data anyway you want, but that adds a
considerable amount of work.
--
Arvin Meyer, MCP, MVP
Microsoft Access
Free Access downloads: http://www.datastrat.com http://www.mvps.org/access