Hi all,
I am using BITCOIN CORE QT wallet, and used bitcoin core - qt version v0.15.0.1 and my wallet was synchronized till mid Nov, 2017. I had upgraded recently to receive some balance to v0.16.0 version for windows. I had no balance. But there was lot of transactions from last three years.

Unfortunately, i lost all my transactions after upgrading and synchronized till date. I kept my blocks and other folder in external hard disk, each time i want to do synchronization or want to do any transaction, i always copy wallet folders to my system and re copy after my work done.I never had any issue till now. i did one test transaction i didnt receive this balance - 0.0005 BTC). I did not see any transaction out of hundreds of transactions after upgradation and synchronization.


Anybody could help me to retrive my balance and transactions since i used this wallet and ID in many online wallets and exchanges?
Thank you in advance