Rule logic needs to be maintained

When you have modified a rule's Advanced Logic (to be something like "A and B and (C or D)" and then you add another field to the filter the logic just results back to "A and B and C and D and E". And then I spend then next 5 minutes trying to figure out what the heck happened... and then remember it's the logic and spend the next 5 minutes trying to remember what it was!

My suggestion is that the logic just remain as it is and maybe do a highlight to remind me to update it when I add a field. Or add the new field to the end like "A and B and (C or D) and E." Either works for me!