When the donations were made the checks clearly stated for XYZ project, then it must be used for XYZ project or returned. This will jeopardize their 501C3 tax exempt status.
Thats why they tell the dubs to not put a specific purpose on their checks. Also the majority of donations are not check but cash. This will not jeopardize their tax status, no matter how dishonest and dirty it was. Also also when they “donated” the money it was no doubt done by resolution and vote of all elder bodies involved. Even if checks were made to that specific fund for that specific reason the resolution by the represenatives of the congregations who donated is legal.