I'm in the same situation ...
I have my maidsafecoins on the btc blockchain. So I see them on masterchest.info
I have a masterxchange account, but I can´t send them directly, isn´t it?
So I tried masterchain.info wallet. I added the BTC-address from which I paid the maidsafcoins with BTC.
But I cannot see the coins there. Would should I do now? Put somewhere the privatkeys in or what?
Then I tried omniwallet. If I create a view-only address, then I can see the maidsafes, but I can´t import the keys.
I have the following keys: Hash160; PrivBase58; PrivHexBE; PublicX; PublicY
Can someone help me?