[mdr-users] mdrant task -problem

Hello metafans,

I'm using mdrant task in an 'ant' script to load metamodel and generate 
interfaces/classes from it.
mdrant task seems not working as I expect :
When I start with 'clean' environment, everything is going well, 
repository is created, metamodel loaded and interfaces/classes generated.
However if I start the script again other task simply skips their 
activity as they do notice that everything is up to date, but mdr ant 
task works again, loads metamodel, creates files.
This really bother me, because I would like to use build script quite 
often, but mdr ant ask is quite slow.
Am I doing something wrong ?
Is this behavior by design ? Can be this improved ?
I'm using it in the way as shown in the sample.xml which comes with 
mdrant task.

Thanks

Richard