how to remove the duplicates in main window table in smartforms

i am developing a form in which the data in the main window is splitting to multiple windows but every time a page break occurs in the next page the first record is repeating twice . i have 3 windows one main window and 2 secondary windows one of the secondary window contains address information if i put a 'only on first page' condition to the address window the main window record is not repeating.

If i don’t give only on first page option sl.no 8 is repeating in sl.no 9

If we give only on first page option sl.no 8 is not repeating in sl.no 9 .