Question : Access 2003:Sub form record deletion problem

In a front/back end database, my problem is to delete a record in only one of the 2 tables that make the query that populates a subform.

A group of client identified by CCANPrime can have several CCAN associated with the group.  T

tbl_ar_selection stores the CCANPRIME, Relationship and CCAN.
tbl_il_extract_cst_01 stores the names of the CCAN (entry cannot be deleted)

The subform (frm_sub) is populated by a query

SELECT tbl_ar_selection.CCANPrime, tbl_ar_selection.Relationship, tbl_ar_selection.CCAN,
IIf(IsNull(tbl_il_extract_cst_01!ccan),"THIS CCAN IS NOT VALID",[cust_name]) AS [cust name]
FROM tbl_ar_selection LEFT JOIN tbl_il_extract_cst_01 ON tbl_ar_selection.CCAN = tbl_il_extract_cst_01.ccan


The subform is in continuous format and each record has a delete button.

    DoCmd.DoMenuItem acFormBar, acEditMenu, 8, , acMenuVer70
    DoCmd.DoMenuItem acFormBar, acEditMenu, 6, , acMenuVer70

When the delete command is activated, the record in tbl_il_extract_cst_01 is deleted together with the record in tbl_ar_selection.  

How can I leave the data in tbl_il_extract_cst_01 intact and only delete the record in tbl_ar_selection

I hope I made myself clear.  I am not a professional and want I know about VBA and Access 2003 is self thought

Any help would be appreciated

Answer : Access 2003:Sub form record deletion problem

After several hours, I opted for
=DLookUp("[cust_name]","tbl_il_extract_cst_01","[ccan]= '" & Forms!frm_main!frm_main_sub_ccan!ccan & "'")

Not as quick, but does the job