In case any real estate, buildings and property, conveyed to any school district by the trustees of any academy or seminary by virtue of the acts of assembly hereinbefore recited, and providing for such sale, shall or may have been heretofore sold or disposed of by the board of directors of such school district, so having acquired title thereto, such sale or sales and disposition of said real estate, buildings and property, so heretofore made, and the purchaser or purchasers thereof, their heirs or assigns, being now in possession and enjoyment thereof, shall be and the same is and are hereby ratified and confirmed; and the title, so vested in any purchaser or purchasers thereof, shall be and remain firm and stable in such purchasers, their heirs and assigns, freed and discharged of and from any trust, condition as to the use thereof, or charge or claim of any nature or kind whatsoever thereon, forever: Provided, That the provisions of this act shall not affect or apply to any suit, action, or other proceeding in law or equity, now brought, or pending and undetermined, which shall or does relate thereto, or may or could be affected hereby.