I recently was required to create a build that only runs quarterly for the production release of our product. I set the Changeset radio button in the UCM Clearcase version of the Clearcase plugin to No History but when the build is executed, I still receive 3 months of file changes which adds a substantial amount of time to the build.
What I have found is the method needsLsHistoryForGetChanges in the file AbstractHistoryAction.java always has the changeset variable set to null which causes the method to always return true.