The short answer
After a breach, the injured party must take reasonable steps to limit its losses. Losses that reasonable efforts would have avoided generally cannot be recovered.
Where it fits in your case
Immediately after a breach and throughout the dispute.
What to expect
Reasonable, not perfect. You need not take extreme or risky steps.
Costs of mitigating are usually recoverable as damages.
Burden. The breaching party typically must prove a failure to mitigate.
What we need from you
Records of replacement efforts, quotes, and decisions made after the breach.
Common misconceptions
“We can let damages pile up.” Avoidable losses may be cut.
“Mitigation means accepting any deal.” Only reasonable alternatives.