This is the situation:
The wallets I want to consolidate are in dumpwallets. When the dumpwallets where created the corresponding wallets where cleared.
If anyone has a suggestion for a solution that make use of the dumpfiles I would appreciate it very much  since that is the only resource I have.

I have also tried to load the dumpfile back to the bitcoin instance where it was originally "dumped" from. Same result.

importwallet "C:\Users\Ingvar\Desktop\WalletsDesktop\DumpedWallets\UsersAdministratorDesktopWalletsDesktopGwallet.dat"

The "Import" command gives the same error message:

"Importing wallets is disabled when blocks are pruned (code -4)"

Stuck!!

Anyone has an idea how to get around this. The dumpfile is what I have

(I know. I should have taken a backup of the wallet before creating the dumpfile)