CLRPFM on file that is foreign key

How does one do a CLRPFM on a table that is the target of a foreign key
constraint?

It's a header/detail arrangement with the following constraint:

ALTER TABLE JEFF/detail
CONSTRAINT gottahaveaheader FOREIGN KEY ( dorder# )
REFERENCES header ( horder# )
On Delete Restrict
On Update Restrict ;

The CL stream has the following:

CLRPFM DETAIL
CLRPFM HEADER

Since I clear the detail first, I thought it would be OK to clear the
header, but it won't allow it. I get CPF3134 which says:

Message . . . . : Referential constraint error processing member HEADER.
Cause . . . . . : The operation being performed on member HEADER file
HEADER in library JEFF failed because of reason code 1. The reason codes
and their meanings are:
1 -- A clear operation was requested and the file is a parent file with
established and enabled referential constraints.

Note that the constraint in question is from file DETAIL which I just
cleared, so it's empty. (I confirmed it was that file's constraint by
removing the constraint.)

Do I have to remove the constraint and re-add it? Or is there an "SQL way"?

Thanks.