There's gonna be multiple tables that have the QTYTYPE and which ones depend on if you are using multi-bin, serial/lot number tracking, etc.
IV10200 and IV10201 both have QTYTYPE, IV00112 has it if you are using bins, IV00200 and/or IV00300 for serial/lot. Those are just ones I know off the top of my head but there definitely could be more.
You could look in to using a macro with mail merge in order to update them. This way you would know everything is getting updated properly.
blogs.msdn.microsoft.com/.../how-to-use-word-mail-merge-and-macros-to-import-data