Migrating Migrations Table from CI3 for existing databases

It would be nicer if migrate recognized the version number from CI3 migrations and didn't try to run migrations before that.

If you don't need to go back to version 0 with migrations,
what if you just delete the migration files that were run on CI3?

This is an interesting idea. No, I don't think there is a need to revert once a migration has run.

I could programmatically:
- Check the CI3 version in the database.
- delete all migrations files to that point.
- drop the old table.
- Run CI4 migrations.

The only potential hiccup I can see is needing to have write access to that folder from the PID running php.