Hi Danie
It's great to know this and it also gave me the comparison point between ehp5 and ehp6 versions of MDG.
Regarding your next question:
case1: if you are using the MDG on operational ERP
can you please check the BAdI provided under the search configuration nodes?
BAdI: Search for Data in Reuse Active Area
BAdI: Access to Data in Reuse Active Area for Search Indexing
Both of these are enhancement spots provided which helpw searching the data from reuse active area. I hope in your case you are using reuse data model for materials.
Personally, I have not implemented any of the above BAdIs but going purely by the help words for your help.
case 2: if you are using the MDG as standalone or Co Deployment and want to search in connected system for material data:
option 1: Please configure T-Rex with Enterprise search connectors if you have these applications within the landscape.
option 2: if it is missing try pulling the existance check BAPIs as web services as event triggers within your UI during CR processing.
Option 1 follows standard configurations as mentioned in the application help guids of SAP and option 2 will be a pure customizing effort.
thanks
Rahul