Stunner - MI properties of MI sub-process are not visible for nodes inside of MI Subprocess

Setup MI sub-process for execution (select MI collection input/output) from existing process level lists and set new variables for MI Data input/output. Add user task inside of MI sub-process try to configure User task in way it will use MI Data input/output. Actual Result: It is not possible variables won't be listed in Data I/O editor Source/Target fields. If you need to use those variables you should define it also in Process Data -> Process Variables first. Expected Result: It will be possible to use variables without any addition configuration.