Question about installing 19H2 switching from slow ring to release preview.

I have a Dell Latitude E7470 laptop I use for testing in the slow ring.  Yesterday, I switched from the slow ring to the release preview ring and installed 19H2.  My question is can I switch back to the slow ring and continue getting the 20H1 builds in the slow ring?  Or do I have to wipe my machine and start over and choose slow and sign in with my Insiders account again?