Did you use any old nodes to sync your wallet or didn't do a run without -reindex after update your pushi core? Maybe your wallet is not on the right chain.

you can use this configuration parameters into your pushi.conf and run your pushi with -reindex

addnode=masternode1.masternodes.ml
addnode=masternode2.masternodes.ml
addnode=masternode3.masternodes.ml

I guess your coins will be available then.