[Serusers] Modified "To" header on REGISTER

Hello, Does save() method of registrar module use original sip message or can it use a modified one like for example by the subst() method of textops module? For example: A coming "To" header of the a REGISTER is modified and then the save() is called: Code: # REGISTER subst_uri('/^(.*)sip:(ip_address)(.*)$/\1sip:mydomain\3/i'); subst('/^To:(.*)sip:(.*)@(ip_address)(.*)$/To:\1sip:\2\@mydomain\4/i'); save("location"); Log: Jan 12 10:09:34 [/usr/sbin/ser] subst_run: matched (0, 17): [sip:200.2.127.187]_ Jan 12 10:09:34 [/usr/sbin/ser] textops: subst_uri_f: match - old uri= [sip:ip_address], new uri= [sip:mydomain]_ Jan 12 10:09:34 [/usr/sbin/ser] subst_run: running. r=0_ Jan 12 10:09:34 [/usr/sbin/ser] subst_run: matched (172, 40): [To: "579997" <sip:579997@ip_address>_]_ Jan 12 10:09:34 [/usr/sbin/ser] textops: subst_f: replacing at offset 208 [To: "579997" <sip:579997@ip_address>_] with [To: "579997" <sip:579997@mydomain>_]_ Cheers.. Caio