Lost content/permission after deployments


In last days we noticed issue in our instance of Strapi, that after merging new models (Single Types) to the production/release environment, we are loosing some content already saved in Strapi, and more often some Single Types are getting unpublished or loosing API permissions for public user group. It is hard for now to connect this cases together so for now it looks like happening randomly.

Is there any known case that can generate this kind of issues during merge of new models? Or during deployment of a model for a testing time, and then switching branches to another model states on same environment?

Thanks for any tips for next investigation.

Kind regards!