I've been trying to use T7GENIMP to update item weights in MTICMSTR.  I've used T7GENIMP many times before without issue, but now whenever I try to import these weights it's appending (rather than replacing) approximately 1/3 of the items - with the product code missing the 1st character.  I have no idea what's going on, but I tried it twice and it happened both times.