Make an effort to be forgiving of errors in management, or what you perceive to be faulty management.
You need to keep in mind that management fouled up now and then before the merger, too. But the merger makes people more sensitive and less tolerant of management mistakes.
Of course, what looks to you like a mistake may be precisely the right move for management to make. Or it may be the best move under the circumstances. Higher management can see things from a different perspective, and they usually know some important things you don’t know about the situation.
Very often there are no easy answers or “school solutions” to merger and acquisition problems. So when you see higher management do something that looks wrong to you, it may be the lesser evil.
There is real need now for you to be supportive of your boss, and of higher-level executives too. Management needs your backing and ...