DQM duplicate check for delivery address transaction MEAN

Hello DQM Experts,

We are running DQM SP4, Data Services 4.2 SP1.  We have enabled address (PV) validation and duplicate checking for creation of vendors.  However, whenever we create a new address using transaction MEAN, DQM duplicate checking is not invoked and as such we are creating duplicates.  Has anyone experienced this and if so it would be greatly appreciated if you could help point me towards a solution.

Thanks,
MJ