When posting customer cash postings, after completing a deposit for one customer
and hitting okay. Then to start next customer deposit within batch, the program leaves customer code plus other fields from last deposit as default in memory. One would need to enter next customer code to get the next customer info loaded. Question, is there anyway to have a blank field for customer code to start next entry or will the program always show previous customer code to start next entry

Change the "Remember batch entry" setting under File | User Preferences.