Will offline mode work with a non advanced datasource such as access?
In general, no, only advance data sources support offline mode but...
Access
Offline: yes
Read/write: no
Caching: none
Also note, Access is not available in the x64 version of RDM
I've started the online documentation for Caching & Offline (Read/Write)... (first draft & incomplet):
http://help.remotedesktopmanager.com/index.html?datasource_caching.htm
Stéfane Lavergne