Importing without restart runs all upgrade tasks, if run after initial install.

• All upgrades are run rather than just the ones that are needed.
• This is only a problem if run after the initial install (where the upgrade task collections in UpgradeManagerImpl are already prepopulated with all upgrade tasks.)

This is fixed/avoided by:

• Do not do the import without restart.
• Stop and start Bamboo before the import.
• If it gets into a screwed state, delete your bamboo home and start again (don't accidentally delete the import!).