A compromise of any controversy as to admission to probate of any instrument offered for probate as the will of a decedent, the construction, validity, or effect of any probated will, the rights or interest in the estate of the decedent of any successor, or the administration of the estate, if approved in a proceeding in the court for that purpose, is binding on all the parties thereto, including those unborn, unascertained, or who could not be located. An approved compromise is binding even though it may affect a trust or an inalienable interest. A compromise does not impair the rights of creditors or of taxing authorities who are not parties to it.