Changing System Type from 'Management' to 'Salt'

Is there a possibility to change the System Type of a already registered SuMa Client system (that shows SystemType=Management) to ‘Salt’ without deleting the system and bootstrapping it again?

When you bootstrap a traditional client with Salt, it will be converted to a minion while the client’s history is preserved.

When I do this, the System shows up with a Salt Key but the System Type stays “Management”. Even after a whole day it still did not change to “Salt”.