I think something strange is going on here. Placing the indicators in the True case and not writing to them when you do not have a match should leave the last value written displayed. I do this all the time and have never had this problem.
I dropped a new meter and connected it to the same place inside the true case right beside the original meter, and it holds the value while the original goes back to zero. I even copied the original meter and it works as it should.
Try deleting your indicators and dropping new ones to see if that fixes the problem.
Ed

Ed Dickens - Certified LabVIEW Architect
Lockheed Martin Space
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.