Access Time Tracking is for SmartPools policies not updating the access time on files.   Per your other post, there was a create time / birth time issue with isi_vol_copy in earlier versions of code and may be causing some of your troubles from your production cluster.   Check the release notes for 7.0.2.4 and 7.0.2.5.
I'm using EMCopy with /sdd flag to copy files from a Netapp volume to Isilon share and it is not copying the file "accessed" time value. The access time inherits the modified time values, create time is OK. Did anyone notice this issue. the "Access time tracking" is disabled on the cluster and I think this could be because of that. I had to use emcopy for this volume as there are issues with isi_vol_copy ( bugs) with 7.0.2.5 version. The isilon share has "run as root" privileges for the user and they are part of local administrator group on both arrays...so no issue there. Please let me know if you have faced this issue before and what resolved it  thanks in advance -H
emcopy - access time not getting copied