Import VISIO stencil set in mulitple layers

Hello,

I start modeling the network in ARIS IT Architect 9.7. Therefor I import the existing .vdx schemata from Visio 2010. This is getting imported as only 1 layer. Is there a way to run the import to obtain as many layers as exist in the Visio stencil set?

Thanks for any information.

Regards,

Beatrice Hirschi