When working with mismatches, the first thing to understand is the concept between desired and actual.
Actual is the value on the device currently (in-production).
Desired is what you tell the AMP via template or GUI config.
If you remove the line from the template, and then push the template from AMP to the VC, then the offending line will neither be actual or desired.
Summary of mismatches:
If a line exists on the AP that is not there in the template, then you'd see an 'Actual' line when you view the mismatch.
If a line doesn't exist, but does in the template, then you'd see a 'Desired' line when you view the mismatch.
If a line exists, but differs from the template, then you'd see 'Actual' and 'Desired' lines when you view the mismatch.
If you see a mismatch, but can't find it by searching the page for 'actual' or 'desired', then you've got a defect which you should open a TAC case for.