Non-required parameters sometimes change to required upon release

[vstrien]

When using the ssisdeploy.exe tool, I have one particular project (SSIS 2016, built using VS2017) where non-required parameters change into required parameters when deploying to any environment.

• In development (VS2017) the parameters are non-required

• When I import the affected ispac into VS, the parameters show up as non-required
  

• When I do a manual deployment (or via isdeploymentwizard) the parameters are non-required
  

• As soon as I deploy using ssisdeploy, the parameters are suddenly "required"

I can provide the ispac-file with which this happens, but as it's an in-company project, I'd rather not post it publicly in Github :-).