So I guess I've found a bug. I moved from the desktop app to the online app. If I do what was mentioned above: create a new line item for the one I want, then delete the old one, it will update it every time in the future from the products and services menu item. But the ones that I've important and set up to use still won't update. It obviously doesn't tie the product in the line item of the template with the product in the product list (both of which were imported from the desktop app). Freaking lame. So hopefully my export/import trick will work and I'll "only" have to click  on each of the 317 transactions, then click on "make reoccurring, and fill out the recurrence info AGAIN, and save. I guess still easier than recreating all 10-15 line items in the 317 memorized transactions. Ugh.