I've done about everything at the post office but sweep the floor. I see no reason why this shouldn't be fine. So long as that postage has only been used the one time on a package that requires that amount of postage, it's fine.
I know one of the steps asks if you are mailing from a different location...I mark yes from here because I ship out of WRJ, VT since it is a distribution center. So this is going to be a learning experience ") for us. I think it will work though. It also asks if you want to make a PDF file out of the label first.... but the shipper has never dealt with making a label..soo I don't want to complicate things... soo trying to do the Keep It Simple method. ")
Thanks,
again