Referencing data from one time range to another time range
How can we reference data from a line item in a particular time scale to another line item with different time scale ?
Like i have my model calendar as FY 2016. And i have added a time range as FY 2017. Lets say i have a line item (x) whose time range is same as model calendar, and another line item (y) whose time range is FY 2017. How can we refer the data or extract the data (without importing) from x to y ?