Backdrop port (Node Convert)

Problem/Motivation

I've been needing this functionality periodically on a few sites that I've ported to Backdrop as I end up rearranging and merging different content types. I've been working on a port of the module for Backdrop. If you would like to maintain (or co-maintain) for Backdrop, please let me know. In the meantime, thanks for all your work here over the years!