When are we going to have this function? i have my previous transactions of over 1,000 entries and I would like to import them into Manager.
Not sure about this. Transactions are quite tricky to import.
First of all, many transactions tend to have multiple line items but CSV format commands one record per line. In this regard XML is better format but there is really no standard which means no consistency.
Currently, the only way to import transactions is through Manager API but you would need to know C#.