AutoConfig is taking the incorrect value ""s_forms_servlet_serverurl"

Hi All,
When we try to to reset
context variable  s_forms_servlet_serverurl
to
/forms/lservlet

Its taking the below value and works in socket mode not servlet as expected.
 <server_url oa_var="s_forms_servlet_serverurl" customized="yes"/>

I have fixed this by manually editing:

../ora/10.1.2/forms/server/appsweb.cfg
serverURL=/forms/lservlet

This is a workaround and will fail next time autoconfig is run please help me to understand why this is happening.


Thank in advance
Samuel