EFG International is officially merged with Banca della Svizzera Italiana, or BSI. With the 1 MDB debacle behind them the Swiss private banks have concluded the dicey last leg of their tie-up.

The Swiss private bank has concluded its long-winded merger with rival BSI, EFG International said on Monday. The last mile of the deal was the takeover of Ticino branches from BSI. 

The deal's biggest hurdle was drawing together two information technology platforms. The move was integral to the deal, which EFG views as a 200 million Swiss franc synergy play.

The merger comprised 15 individual IT migrations this year. With the deal, EFG advances to one of Switzerland's largest private banks, which 147.5 billion in assets under management as of October.