no parameters sent to submodules that report submodule state substitute during connection establishment

On Connect request device responds with Module Diff block.
Module in slot 0 and all its submodules are set to substitute.
Controller does not send parameters, which were configured for slot 0 subslot 1.

If all modules are correct, controller sends the parameters.

I have expected, that a substitute module is handled similar to a correct module by controller.