There are some hints about the installation order in this article: TwinCAT XAE Changelog (bosch.com) https://community.developer.bosch.com/t5/Bosch-Private-Area/TwinCAT-XAE-Version-History-for-Nexeed-Control-plus/m-p/99367
If I understand the article correctly, you need to install a later RM after 4020.
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