I'm trying to import a tried and tested solution into a new clean Sandbox environment that has recently been upgraded to 2016. I was able to successfully install this solution in another Sandbox on the same tenant unmanaged, and this is the first time I'm trying to import it managed in 2016. The solution is telling me that components are missing from the system, but they definitely aren't! Has anyone else come across this issue in CRM 2016?
This only occurs for fresh managed installs, not for upgrades or unmanaged environments.