whenever i open PS beta version, the files are opening in PS version, i think i have been subscribing for both the versions. can i cancel PS version?

i thought they were separate versions, but the issue is, i open beta version, and any file i open it opens in PS version, earlier i can open them separately - now in beta version, files are opening in PS version, can this be sorted out? 

The Photoshop Beta version is completely free and included in your standard Photoshop / Creative Cloud subscription. You cannot separate them. If you cancel the official Photoshop version, you will lose access to the Beta version as well.