Resolution:
If there is one or more space infront or after the durable name, it won't be displayed
when you do the show durables. It will just show the name and we can not see the
spaces. So you open the durables.conf. There it will show like "test   " if we have
two spaces after the durable name test. Durable name with the spaces also considered
as a valid name. As we are not able to see the spaces when we do "show durables",
this looks like the same name. But both are different.