Revinvoke-connlist.cnf

Please tell me what is the use of REVINVOKE-CONNLIST.CNF in webMethods…

Issue we faced :-
On the Webmethods IS, the reverse invoke function hasn’t be re-registered. These config files are lost when clustering is turned off, and are not recreated when clustering has been turned back on.

Can you please tell me what will be the impact if these files are not got recreated ?