Workaround to import spaces from newer version to older version of confluence

[P]

Is there an available workaround to importing spaces from a newer version of confluence to an older version? 

I have spaces in confluence version 7.10.2

That I need to import into a confluence on version 6.13.9

From the documentation I've read so far, I know backwards compatibility is not supported. 

I was hoping someone could share a potential workaround. 

Or definitively tell me that what I'm trying to accomplish is impossible without just upgrading the older version. We do not have an active license to do so. 

[Brant Schroeder]

Atlassian says no.  I have had some success going from one major version to another in that version say 6.13 to 6.12.  I am not sure this will be the case going from 7 to 6.  Is all you have to do is edit the export version in the xml (the xml reports the export version - use a text editor to change it to the target version)  You will be doing it at your own risk and I would recommend doing it on a test instance first to see if it works.