We have pushed our live site to a staging server in order to implement a new theme design behind the scenes. If we continue to update the Calendar on the live site, then bring the staging site back over to replace the live site, will we lose the recent work on the live site?
You should be good to go as long as the sites are using separate databases. In other words, moving the plugin from site-to-site will not affect your content in any way, but moving your database from one site to another would certainly affect it.
Does that help answer your question? Please let me know. 🙂