Onion/BTC and Onion/ETH in a wallet

[Onionfan1980]

 Question one.

I purchased some Onion coins from Cryptopia and some from Kucoin.  One is BTC and the other ETH based. Can i move them to the same wallet or do you have to have different wallets to hold them.

Question two.

If the onion wallet can hold both in the same place can you move your Eth onion over to Cryptopia after its been held there? Or is the code wrong for that.
I worry about losing onions because of coding and my own lack of knowledge.

Thanks for your help and information.