Maps with switch as host does not display status

[stevenfoo]

I have created a map A and inserted couple of switches.
The icon and the information is display OK and some DISABLED.

I have also created a map B and inserted couple of hosts.
The icon and the information is display OK and some DISABLED.

However I have another Map which is the main map where I insert both
map A and map B as switch and server icon.

Map B which is the hosts display the status OK in the main map.
However map A did not display anything at all in the main map?

Any ideas. Using version 1.8.4.