Ticket Number referencing another ticket number

[PFEFWV]

Hello

I have a client who has asked the following question:

"of ticket creation requested by a customer, if inside the mail there is another ticket reference (it happen quite often) there is no new ticket created but an append on the ticket reference with a new note."


In the SysConfig settings I have them set to

PostmasterFollowUpSearchInBody

Default value: No We have this value set to Yes

Executes follow up mail body checks in mails that don't have a ticket number in the subject.
PostmasterFollowUpSearchInAttachment

Default value: No We have this value set to Yes

Executes follow up mail attachments checks in mails that don't have a ticket number in the subject.

What I would like to happens is that if a client sends in an email ticket with an existing ticket number in either the body or the subject heading,
if I set those two settings to off does this allow the ticket email to create a new ticket instead of appending the ticket that already exists.

If the above are not the settings that do that, then what settings, file do i edit etc etc to stop the appending of exitings tickets, if possible at all ?

[crythias]

FollowUpSearchInBody is looking for a ticket number in body. If no, this doesn't happen.
etc.