How to update troops at the shq?

[Burnrate]

I marked my first 7 versions of infantry obsolete and they all left my units and headed back to the shq as expected.

I would like to update them to the latest version and then they will automatically go back out to the units. Is there a way to do this?

I have 17k troops at the shq in the replacement units screen that are of the obsolete type. How do I use those to create new versions or update the troops?

[Burnrate]

Figured it out after posting of course. Just had to go to the units tab with the shq selected and upgrade from the list of cards.