In SSDT 2017, I get the following error when copying the connection from one package to another package. Connection is Project type connection.
Error:
TITLE: Microsoft Visual Studio
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The SSIS designer could not initialize the pasted components for design-time operations.
At least one connection manager could not be pasted correctly.
The connection manager with the name 'XXXXXXXXXXX 1' could not be pasted successfully.
The connection manager could not be created.
Object reference not set to an instance of an object. (Microsoft.DataTransformationServices.Design)