We have an old 5.1 Confluence (no longer managed, not upgradable) that we have to export data from to insert into a new 6.4 Confluence (different manager). We tried a straight export->import but things must have changed enough that this doesn't work.
Is there an XSLT available to modify the 5.1 export so that 6.4 can ingest?
For clarification:
We don't control the Confluence installation. The people hosting the 5.1 version are shutting it down (not upgrading) and the host we're moving to is running 6.4.