Xogging out a rate matrix and then xogging in the exact same one as a new matrix is dropping some rows.
This may be because one of the columns in the matrix now has invalid data.
This can been seen if the matrix is using resource as one of the columns and then the resource is either inactive or financially inactive.
This row will not be added. You may see an error containing this line
That is telling you that the row is not passing validation to be added to the matrix.
Release : 15.9
Component : CLARITY XML OPEN GATEWAY (XOG)
Find the rows that are missing and then investigate why.