How to convert .schdoc (DXP) to Orcad 10.5 schematics?

Dear all,

Someone send me DXP schematcis with .schdoc file extension. But I only have Orcad 10.5 available. Do you know a way to convert them to Orcad

I tired "Import Design." on Orcad capture, but it doesn't work.

Thank you very much!