Hi,
How did you deploy your model, was it via the modeller or via the REST API?
If the engine is configured to be deployment aware, then on restart, those models deployed via the REST API or modeller will not be recognised as deployed in that engine instance.
This document section talks to deployment aware.
Camunda behaviours are fine in production, however you need to understand the architecture required of your particular architecture and the associated behaviours…
regards
Rob