Great Britain secured a place in Sunday's Fed Cup Europe/Africa Zone Group I promotion play-off after taking an unassailable 2-0 lead over Hungary in Israel.
Laura Robson and Heather Watson both won their singles matches as Britain progressed to a play-off against Bulgaria in Eilat.
Robson came back after failing to win a game in the first set to triumph 0-6 6-2 6-1 against Greta Arn, but Robson had to call on the trainer for treatment to a shoulder injury during the match, something which will be of concern to captain Judy Murry ahead of their showdown with Bulgaria.
Robson told British Tennis: "After the first set I thought, this can't get any worse. I regrouped and played better in the second and third sets."
Watson had things much more her own way as she won 6-3 6-2 over Timea Babos who herself needed treatment for a back problem during their match.
Bulgaria enjoyed a comfortable 3-0 win over Slovenia in a tie which was also saw a player compromised by injury.
Dia Evitimova won 6-1 6-0 against Tina Rupert before Slovenia's Tjasa Srimpf retired after losing the first game of her match against Tsvetana Pironkova.
Elitsa Kostova and Isabella Shinikova were 6-2 6-3 winners over Andreja Klepac and Rupert in the doubles to complete the whitewash.