Hi, Nathan!
When you are using any system based on NAD83(2011) we assume that your NTRIP in NAD83 (2011) as well. So, no additional transformation between different datums will be performed only projection will be applied if it’s necessary.
For example you want to use EPSG:6339(NAD83(2011) / UTM zone 10N)
You can see a hint on the screenshot about expected base coordinate system, it should be
NAD83(2011).Transformation
NAD83(2011) -> NAD83(2011) / UTM zone 10N will be performed in order to get final coordinates.