Problem with EXchange rate field in MBEPOH structure

Hi Experts,

I am working on data transfer of POs from 4.6 to 4.7 using the standard extract program RM06EEEX and then loading it using LSMW.

Problem is with the exchnage rate field(WKURS). Length of this field in MBEPOH is 9 characters in 4.6 and it is 1 character long in 4.7

So the data is getting truncated becuase of this mismatch. Is there any sap note avaliable to correct the field length MBEPOH-WKURS or any other way to pass correct data to the strucure in LSMW.

Thanks in Advance ,

Harkamal