How to update new info record amount in existing purchase document

Dear Experts,

I have Create Info Recrod for 01.04.2014 to 31.12.9999 Validty Rate is 100.00 Rs.

Created Purchase Order/ Schedle Agreement on 01.04.2014 automatically PB00 Rate is 100.00 Rs.

Purcahse Order(44000000315) Created of Quantity 10000 EA.

Partially MIGO Done of Quantity 100 EA as rate 100.00 RS per EA. on date 03.04.2014.

its fine for me.

I have new Rate for the material as 110.00 Rs From 05.01.2014.

So I changed the info record for Validity 05.01.2014 to 31.12.9999 of rate 110.00 Rs and exisitng Info record Validity get closed as 01.04.2014 to 04.04.2014 rate 100.00 Rs.

Now,

But My requirement is:

When i will do the posting MIGO.

I want to hit the accounting document as per new info record amount i.e. 110.00 Rs.

Thanks in Adavance

Ajay