LPS-48728 Fix starting issues
LPS-48981 LAR export should only read data (with a very few exceptions, eg. last published date update)
LPS-48981 Move logic to an internal method - no changes yet
LPS-48981 Update last publish date upon transaction completition, so that export can remain a read-only transaction
LPS-48981 Move constant REQUIRES_NEW_TRANSACTION_ATTRIBUTE to a better place - no logic changes
LPS-48981 If this is called as part of a read-only export process, it's got to be running as a separate transaction