natyboi,
What is the purpose of keeping the one specific field's data? Are all these records related via that value? If so, then it would make more sense for your form to be set up as a Parent/Child, with the subform bound to a separate table, with a foreign key to your non-changing value of the main table. Then, every time to go to a new record on the subform, everything is cleared except for the main-form's value.
Not sure if I explained that very well. Those of us who have been doing this for a long time understand the principle, but it is all based on having tables that are properly Normalized (
see this thread).
@Seth, does this sound right to you?