Tried:
14:39:37

importwallet "C:\Users\Ingvar\Desktop\WalletsDesktop\DumpedWallets\UsersAdministratorDesktopWalletsDesktopDBitcoinBUwallet.dat"
Resonse:
Importing wallets is disabled when blocks are pruned (code -4)
Solution??
It's a known limitation of pruned wallets. When the wallets are pruned, the client automatically deletes the blocks as it synchronizes. When a new wallet file is imported, the client is unable to determine the full transaction history of that specific wallet due to the deleted block files.
The only solution is to resynchronize the entire blockchain with your new wallet unfortunately.