HPCC-8854 Performance Improvements

Fix merge clash (refreshActive calling wrong base class method).

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #4551 from GordonSmith/HPCC-8854

HPCC-8854 Performance Improvements

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>