Are there any tools that assist in redeveloping and porting from FIRRTL to firtool in CIRCT?

I currently have some redevelopment that was originally done under the FIRRTL framework. Due to the compiler version, it needs to be migrated to the firtool structure under the CIRCT framework.
Since there are some design differences between the two, but also a strong correspondence and inheritance relationship, I would like to ask if there are any tools that can assist with this kind of migration. Thank you in advance for your answer!

The issue mentions FIRRTL, firtool, and CIRCT but names no files, tests, or entry points. Start by reviewing the project's migration documentation and firtool guidance to determine whether supported porting tools exist. Done would be a documented, actionable migration path or a clearly scoped request for new tooling.

Written by the indexing model from the issue text.