Mantis Bug Tracker - Forums

I would like to know what should I put if the issue cannot be reproduced and I want to place the issue under monitoring.
Placing the issue as closed and resolved seems misleading. Other statuses seems as well.
Bottomline is I don't want to close the issue.
Thanks for you help.

You can keep it as "new", but change the resolution to "unable to reproduce". Or you may decide to create your custom status.