Gut feel says the coach batteries should charge (not necessarily the chassis batteries) when connected to shore power. However, I do not know Monaco. Consider posting this in the Monaco Owner's forum. On the iRV2 main page scroll down about 1/2 way and you'll see the Owners Forums. I suggest this because nobody knows your coach like somebody who owns one just like yours.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours