Transfers restricted?

It seems that a non donator account can’t transfer the system to a donator account. Is this intended or a bug? In the help, no restriction is mentioned for transfers.

Looks like a bug. It has been fixed now, thanks for reporting this.

While transferring from a non donor to a donor now works the opposite does not even if the system has no extended values.

The transfer destination / receiver would need to be on donation status.