Dear all, 

I'm trying to simulate masonry wall under pre-compression and blast load. I ran the pre-compression using general static step (restart files requested) then I import the results to another model to apply blast load using dynamic explicit step. When I run the later, I receive this error "16 elements have been defined with multiple property definitions and/ or material orientation of imported elements has been redefined. The elements have been identified in element set ErrElemRedundantSection_Import." 

Even When I remove these elements, another 16 elements are selected and the same error arise. Any help is appreciated. 

Thanks

Abaqus ​​​​​​​