Great information. Very helpful.

I am hoping you can help some more  

I am trying to import from Multibit classic.  I have exported the private key but when I try to sweep it in Coinomi I get the following error.  What are my options?

"The transaction is bigger than what the network allows, try sending a different amount"
I suspect this is due to this wallet having lots of transactions (was used for mining).  My other multibit classic wallets imported fine.

Thanks,
NJ