Thanks for the videos, AbnRanger.
Wait, so if I'm "supposed" to import my reference mesh to the sculpt room, why is there a menu option specifically made for importing a retopo reference mesh? The program even directs me to this with the opening dialogue box.
(my mesh was already decimated to 1 million polys, so I used the first option)
The strange thing was I checked the tool settings in both instances, and spline point density was set to 100% in both cases. I assume there was something weird going on with my mesh, I must have checked something I shouldn't have when using the import tool.
Either way, using the dedicated reference mesh import option ended up working for me in the end. I imported a reference mesh to the retopo room, started retop on it, and was able to export the retopo mesh pretty painlessly. Thanks again for the help and the videos.