Tracy,
I tried it out in QB, and was able to duplicate the problem. As suspected, QB is very confused by the address.
Check out this screenshot, as proof. This is what you have when you click Edit for the address in QuickBooks:
It doesn't know how to deal with the address at all, and start duplicated parts of the address ("Xiamen, Fujian") and sticking it into address notes. After a few times of syncing the same record back and forth, QuickBooks and has stuck Xiamen, Fujian in so many places that it breaks.
Now try the same thing with:
Xiamen Feeling Garment and Textile Co LTD
No.14-16, Xingmei Road
Xinglin, Xiamen, Fujian
China
When you click Edit this time, QuickBooks is somewhat happy.
It would much rather have a US zip code, but at least it knows that China is a country, and doesn't start repeating addresses in different spots.
I tried this with a fresh purchase order and was able to sync back and forth over and over, and the address didn't go haywire.
So, recommendation for the future, if you have an unusual international address, click Edit in QuickBooks and make sure it understands the address. Otherwise you'll break 3rd party program like Method that are trying to understand what QuickBooks thinks the address is.
Now, onto the issue at hand, this PO. Try changing the address in QB on the PO and syncing again. Hopefully that clears it up. If not, we may have to go in and clean up all the extra address info that is stuck on that record behind the scenes (or if you want to make a copy of the purchase orders screen and show ALL address fields, you can clean it up yourself and save it. Then you can discard the screen).
Paul