SQL Server 2012 :: Rollover Prior Quarter Data To New Quarter In A Table - Output Identity Values

I have a process to rollover prior quarter data to new quarter in a table.

For example, i have a table with (col1, col2, year, qtr) with data like ( Note: col1 is identity(1,1) )

1,'today',2014,1
2,'tomorrow,2014,1
3,'friday',2014,1

Now when i run my process, above 3 records will be rolled over new quarter 2014 Q2 and the table will be like

1,'today',2014,1
2,'tomorrow,2014,1
3,'friday',2014,1
4,'today',2014,2
5,'tomorrow,2014,2
6,'friday',2014,2

Row 1 with identity 1 has rolled over to new quarter row 4 with identity 4 ( qtr fields are changed )
Row 2 with identity 2 has rolled over to new quarter row 5 with identity 5. Same with last row as well.

Here, i have another table called "ident_map" with columns like (old identity, new identity ) and during rollover i am supposed to load ident_map table with old and new identity. So after rollover is complete, ident_map table should look like

1,4
2,5
3,6

I know using output clause I can capture the new identity values. 4,5,6 in this case. But is there any way to capture both old identity and new identity during rollover so that i can load the ident_map table with old and new identity.