The requirements are to change a custom JDBC endpoint type which is already deployed and working.
Using Connector Xpress, when creating a project from the deployed endpoint, as soon as the project is created the Deploy Metadata disappear and there is no way to deploy any changes.
This problem is not observed with other JDBC endpoint types.
Release : 14.x
Component : IdentityMinder(Identity Manager)
The endpoint type was marked as static - "Is Static" checkbox was checked
Uncheck "Is Static" checkbox for the deployment to work