Carrying values in a form...

[Van T. Dinh]

It is expected as when you re-open the Form, the
DefaultValues revert back to what you have in the *Design*
of the Form and not the values during the processing of
the previous session of the Form.

You need to change the design of the Form if you want to
retain the same DefaultValue different sessions of the
Form. Alternatively, you can use code in the Form_Open or
Form_Load Event to set the DefaultValues.

HTH
Van T. Dinh
MVP (Access)