Migrating from Squidex 4 to Squidex 7

Is it possible to go directly from a Squidex 4 set of mongo databases to Squidex 7 ? If not, is there a sequence that could get us there ?

Also, is it a matter of stopping the Squidex 4 instance, and starting up the Squidex 7 instance pointed at the same databases ?

Thanks

Theoretically it should just work, but I haver tried it.