I found this thread (https://www.jdelist.com/vb4/showthread.php?t=47573) and rejoiced, because I am having the exact same issue. Only problem is that I followed the instructions and they didn't work. It could be so many different issues, though, so I'm not sure where to start bugfixing. I've attached a version of the .rtf I'm working with (converted to a .doc); the goal is to anchor a check to the very bottom of the page regardless of the other elements. Since the checks have sensitive information I've only included the invoicing table which also needs to be anchored to the top of the page.

external_version.doc

I am running BI Publisher 12.2.1.3, and the version of the plugin I'm running is 12.2.1.3.