Cannot have two taxonomy_* fields

Good day to you @daymobrew

The biggest detail here is that the taxonomy_* field types are meant to replace the default metabox used for the taxonomies. They aren’t an additional metabox that saves to post meta, they actually update the terms associated for the post. I have provided a link below to some wiki information about creating selects/radio setups that use term/taxonomy information in a metabox that saves as post meta instead of updating the term associations. Hopefully this provides a good step forward.

https://github.com/CMB2/CMB2/wiki/Tips-&-Tricks#a-dropdown-for-taxonomy-terms-which-does-not-set-the-term-on-the-post