Reflecting Change of content DB in DPM

We recently have come across with an issue of DPM that we replaced a sharepoint content database of one webapplication with new content database in our sharepoint 2010 environment and even after changing the content DB, we have been noticing errors with old database name, instead of new content database in DPM like "Last one recovery points not created" . Can you please suggest me how to reflect/refresh the change of content data base in DPM?

Thanks .