Hi Petr, I think I understand why you can't replicate the problem, which is still present today. If you copy a channel function from one channel and paste it into another channel this problem does not arise. Occurs only if the copied channel function comes from a mode master container. It happens both if you paste it into a channel without master mode but also if you paste it into a channel with master mode, so I think the problem is related to the copy of the source channel function and not to the destination channel. Thanks. Best Regards.