Ok, building on my last post on this topic, export/import from/to SDE. I export my SDE using export "XML Workspace Document..." and I'm using the Z File format because of the large size of the database (exported Z files still approaching 10gb in size). Export process runs successful now, and the import process into a new SDE runs successfully but, when I start checking through all the feature classes, some are missing their data. Schema comes across fine though. Can seem to find any pattern with the feature classes missing data. Truly puzzling.
Any help appreciated