conflicting two magento extension

Question

I have two same extension but both are using for a different-different purpose.

Extension A Config.xml

Answer 1

This is the same issue which i faced ,Currently you are adding before tag only in one extension so remove this line.

fee

you have to set the after and before tag in both of the extension.

In Extension A Config.xml file use this

subtotal,discount,shipping 
tax,grand_total 

and in your Extension B Config.xml file use this

fee 
tax,grand_total 

Hope this will help yours