I have 3 modules: (A, B, C)

I have inherited A in B then B in C. 

In B: an xpath has been changed eg.

<xpath expr = "// p [@ id = 'fiscal_position_remark']" position = "after"> 
      <p t-if = "doc.note2"> 
        <span t-field = "doc.note2" /> 
      </ p> 
</xpath>

Then I'd like to modify the above lines in C and delete it.

<xpath expr = "// p [@ id = 'fiscal_position_remark']" position = "replace"> <p> </p>      </xpath>

Tried with the above lines in C and it does not work. 

I'd be happy to get any feedback from the community