"tried to transfer coins to bittrex but my wallet was out of date and so they never showed up"
I'm making some assumptions here so please be kind:
Likely you where on an old fork of the NEOS chain and your transaction never took place on the "live" blockchain. Have you tried loading a old backup of wallet.dat into a new NEOS client? I believe the conversion to the "new" blockchain will be automatic. (because Syntax/twoturtles is a pro) Remember: coin amount was reduced by 3:1 when we switched to the POS/Masternode code base v2. So you might be "missing" some coins.
Id start the recovery process for your Bittrex account ASAP. Ive logged into accounts and 'found' 1000$ of dollars of crypto Ive forgotten about and was worth pennies last time I logged in. Good luck and happy Neos !
No i haven't tried loading the wallet up on a new client yet because i was afraid as soon as i did it would try to make the transfer. I don't know if it would or not and was just curious if it would. I'll have to see if i can get that account back i know i had a bunch of alts back in the day just sitting on it.