Any change to a parameter mapping or anything else that requires a re-index of property mappings should be automatic.
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/What-triggers-a-pr...
It seems the lack of this is a relic from a time where servers would need most of their resources to re-index. With modern tech, this is trivial and takes 10 seconds at most. At least it does for us and we have ~37,000 files. It's bothersome to ask the Vault admin to trigger a re-index whenever we mess with property mappings.