Its definitely full install I guess, but fullzero said he will update OP with full instructions, lets wait for them.
If v0019 is Ubuntu 16.04 too , it shouldn't need full install.Unless it has big changes in distro and softwares.
Hopefully it doesnt need full.
My advice, when u switch version.
Just do a fresh install, remember to save your alias or anything u have tweaked for your usage.
Easy way to do it, have a spare USB card, do your rig one by one
So u just have to stop mining for maybe 1 minute.
I agree, that's the best way going forward so that we don't get any new issues with it!