Imports must replace drafts w/ published in split

PLAT_299

@adampalay please review & decide whether to add another bug report for old mongo (which does not work)
any(@cpennington @doctoryes @nasthagiri) please review
Do you mean it restores the element to the *imported* version in both branches? And the edited element is lost? Looks that way from the test below - perhaps state that in the docstring above?