Hello!
and again there is a mystic feature 
Is there any place
where I can find the explanation, what the ticket relationship
operate.
For example:
If there a two tickets with a “refer”- relationship and there
is correspondence added to the “target” ticket, will the
mail also go to the requester and cc of the “Source” ticket (the
ticket under “Referred to by”)
bye!
Sven Sternberger Tel.: +49 (0) 40 8998 4397
Desy Email: sven.sternberger@desy.de
Notkestr. 85
D-22607 Hamburg