Jacob, muchas gracias`. It works good.

To handle data quality concerns I would like the matching for the clientID
(T's C1 vs All's col A) to be more "robust" via addition of TRIM, and the
match is also not to be case-sensitive (I think currently it is
case-sensitive), ref the line below:
If ws1.Range("A" & lngRow) = ws2.Range("C1") Then

Thanks