Discrepant Record Numbers Between Query And Table It Is Based On.

I have a temporary table with all text fields for importing data to a normalized table. In order to import I need to prep the data by pulling the numeric values of "lookup" type fields (nb. not actually using MS Access lookups)

My prep query is producing 9 more records than there is rows in the import table, even though every join is a LEFT join, which should just pull all import rows and match up lookup values where they are available.

eg. of import table (all fields are text)

Location;
Group;
Name;
Wfm type;
Account Number;
WFM Status;
Date Created;
Date Held To;
processdate

Beachville Operating Centre;
Service Orders;
DAVID JONES;
;
Complete Engineering Investigation;
Completed;
4/20/2007;
;
4/27/2007

here is my prep query (the iif is to replace userid's that can't be found with UNKNOWN)

SELECT lookup_location.val AS F1location, lookup_group.val AS F2group, IIf([lookup_user.val] Is Not Null,[lookup_user.val],"UNKNOWN") AS F3user, wfm.wfmcode AS F4wfmcode, CURPW020_import.[Account Number] AS F5account, lookup_status.val AS F6status, CURPW020_import.[Date Created] AS F7datecreated, CURPW020_import.[Date Held To] AS F8dateheldto, CURPW020_import.processdate AS F9processdate
FROM ((((CURPW020_import LEFT JOIN lookup_location ON CURPW020_import.Location = lookup_location.txt) LEFT JOIN lookup_group ON CURPW020_import.Group = lookup_group.txt) LEFT JOIN lookup_user ON CURPW020_import.Name = lookup_user.txt) LEFT JOIN wfm ON CURPW020_import.[Wfm type] = wfm.wfmname) LEFT JOIN lookup_status ON CURPW020_import.[WFM Status] = lookup_status.txt;

any assistance would be much appreciated. any other info needed let me know.