Form/Sub-Form problem

I have a form that is empty except for two
sub-forms, the reason being that I want
to move the 2nd sub-form up and down
depending on what record is currently
selected in the 1st sub-form.

Both sub-forms are "continuous". The
second sub-form is however filtered to a
value that would produce at most two
records.

When I open the 1st sub-form directly from
the DB window, it displays "continuous" as
it's intended. However, when I open the form
in which it is a sub-form, only one record
displays, as though it's in "single form" mode.

I've not been able to discover why that 1st
sub-form does not expand to "continuous"
when used as a sub-form.

All the properties look correct. What might
I be missing?

Bill