I imported my Jaxx Wallet in my electrum wallet a month ago and I was using everything just fine.
Did you import using the Jaxx 12 word seed mnemonic... or did you import private keys?
Private keys. and I'm not sure how it worked. but transaction showed up in my Jax Wallet Android client and not in desktop. but I'm pretty sure it was a wallet address from Electrum.
IDK how things messed up and even though I'm using same Jaxx backup in my pc and phone wallet. the transaction is only showing in Android Jaxx Wallet.
This was a headache. I just transferred everything from all my wallets to my exchange website btc address. now, I'm deleting both electrum and jaxx wallet and their backup permanently. and will start using Electrum again with seed this time from scratch.
Bye Bye Jaxx Wallet forever.