Changing task parameters prevents Luigi from resuming failed workflows

When task parameters are modified between pipeline runs after a failure, Luigi generates new task signatures. This causes Luigi to treat them as entirely new tasks rather than continuations of previous work, forcing re-execution of all tasks including those that previously completed successfully.

Maintain consistent parameter values when resuming failed workflows. If parameters must change, understand that all tasks will re-execute from the beginning. The same task class executed with different parameters are considered different tasks by Luigi.