Exception SQL Question

I am trying to determine Changes to an Order

A baseline is Taken (Detail-F59912)

And then the JDE Order Detail File Is compared to that

SELECT DISTINCT SDKCOO,SDDOCO,SDDCTO,SDLNID,SDMCU
FROM ajdevjdta.F4211la
EXCEPTION JOIN ajdevmdta.F59912 ON
SDKCOO = CBKCOO
and SDDOCO = CBDOCO
and SDDCTO = CBDCTO
and SDLNID = CBLNID
and SDMCU = CBMCU
WHERE SDDOCO in
(select DISTINCT CCDOCO from ajdevmdta.F59911 where CCTYPE = 'AB')
and SDLNTY = 'S' and SDNXTR <= '560'
for READ ONLY

This is not returning any results

Yet there is differences in the Data (SDMCU<>CBMCU on 2 Lines of the
Order)

One difference That I have identified is the Line number types are
different Packed and Zoned could that be creating an issue

I changed and SDLNID = CBLNID to and char(SDLNID) = char(CBLNID) and
got the same result

Any help with this Sql Statement would be appreciated

Thanks

Mike