On QT wallet version 1.0.2 that just overwritten the qt wallet on the same btc3 folder with same block files on roaming folder this is what is currently being displayed on the getmininginfo console with far lower diff rating with no troubles mining blocks from desktop for the last couple of days now. We can still see 5 connections on the old node that has 6 connections. Once you overwrite the existing qt wallet with the new wallet version all the blocks should move forward and confirm any past transactions and should sync up with the network.

Thank you