Assalam O Alekum

We are running an Islamic institutation that also has a small Madrasa. I will state the question in general terms in the interest of confidentiality. I will appreciate if you don't make the question public.

One of the teacher was going through a divorce in the court. She asked to temporarily reduce her salary to half of the actual amount until her case is settled in the court.She asked for a new contract with half of her salary to show it to the court. The case is settled and she recieved her share. The Ameer also agreed to withhold the salary and pay her a lump sum amount after the case is over and also, reinstate her salary back to the original salary. The issue was never discussed in the Shura, it was between Ameer and the Teacher.

Now the case is settled and she is asking for withheld money and reinstatment of the full salary. The question is do we honor the promise of the previous Ameer even if it  was cheating and fooling the system, he made the promise on behlaf of the institution. The current Ameer does not want to make any unjust decision and wants to have clean account regarding this issue on the day of Judgement 

Please answer the following

Do we honor previous decision

If not, what is the best advise you have to handle this case