@ Michael - the invoice saves fine without the Conditional Warning. When I add it, that's when the saving is altered and I do not get a prompt about the missing class. I remove it, and it saves like it should again. On this screen, it only has one save button (no Print Preview, etc.). This screen is an altered standard invoice to have a few messages and only show the fields on the invoice that are needed.
I also made a copy of the standard invoice in the same Method account. The only thing I added is the Conditional Warning and it is doing the same thing as my altered screen. There is no warning message and it partially saves the invoice.
To try to make sure I am using the Conditional Warning action correctly, I created a copy of the standard invoice in a different Method account. I added the Conditional Warning and it works in that account. I think there is a bug in the account where it is not working. Can you take a look at it?
Thanks!