Mexican Trial Balance - XML File unbalanced

Dear Experts,

Mexican Trial Balance - XML File not showing the correct values in a negative sign or positive sign. When we compare Trial balance report and Mexican Trial Balance - XML File report we identified that Equity accounts values are appearing with a contrary sign that they are supposed to appear, as a result the beginning balance and the ending balance are unbalanced. The addition of all rows does not end in 0 as it is supposed to be.

How to correct this is there any setup needs to be changed?

We read the note in Doc ID 1994528.1 but not even changes in nature has correct the signs, in fact the use of flexfield mexican contra account changes the account nature in Chart of Accounts Mapping but still give us the same Equity accounts inverted.