Convert To Flow Now Generates Before-Save Triggers and Subflows
Support for Process Builder Processes that Launch Flows
The latest update of Convert To Flow adds support for Process Builder processes that launch flows, converting them to Triggered Flows that use a Subflow.
NOTE: this requires a Winter ’22 Org.

The Newly Generated Flow Will Use Before-Save Triggers If Possible
If the source process or rule does a straightforward field update, a high-performance Before-Save trigger will be used. If the source process does something that’s not allowed Before the Save, an After-Save trigger will be used.
Bug Fixes
Several bugs have been fixed that were preventing successful conversion.
Check it out here.