A small company signed time&material type of contract with client A which basically guarantee that 3 people would work on project for the client. The cooperation lasts a few quarters already and so far both sides were happy with it.
In the meantime another very important client B orders a big system from the company and basically everyone except of PM is taken to work on the new system. It is a decision made at the very top of the company which PM has no control over. The situation is temporary but will last about a couple of months.
What can PM do to maintain good relations with the client A and avoid losing the contract with them?