Documentation request: changing build number in exportDescriptor.properties

https://confluence.atlassian.com/display/DOC/Changing+the+version+of+a+space+backup

The documentation above suggest that this solution works. Even though it suggests that it should not be done on a production server, still many customers use this as a reference on production, moreover when migrating to OnDemand. This causes various problems and even if the load of the export succeeds, it may cause problems later on, that is very hard to track back to this particular activity. We should not recommend this at all I believe, even if this was working earlier, it is surely causing problems in the latest versions.

As a workaround, we should always advise to create a staging instance with the source instance's version, import the space there, upgrade that instance to the target version, then export the space from the staging instance.