There are times you start adding new transactions to iCash to find out later that you have chosen the wrong month or wrong year. Actually that is not a big issue because iCash allows you to transfer any transaction between months or years very easily.
Just select the transations you wish to transfer and select the 'Transaction | Transfer to' menu, select a new date and press the Transfer button:
Note that you can also select the transactions, right click your mouse and use the contextual 'Transfer To' menu.