@vearfj, the things you’ve said are contradictory in several ways or indicate you are using Manager incorrectly. You’ve said there were no starting balances, then there were. You apparently have a tax summary in Manager that matches MYOB, but then you say it is different. You did not enter starting balances, but you expect Manager’s current balance sheet to match that from a prior, and evidently still ongoing, accounting system. Through it all, you basically are asking others to tell you what is wrong with your accounting when they cannot see your transactions. And, if you just started using Manager, but downloaded v18.3.48 from somewhere recently, it’s definitely possible you were using a counterfeit version.
I you are going to migrate to Manager from your prior system, you must do two things, and do them correctly:
If you are running parallel accounting systems, you must understand that they do not work identically. Each must be used according to the way it was designed. Only then can they produce equivalent results. If they generate discrepancies, only you can dive into the transactions entered in both to understand why.