qiskit/releasenotes/notes/0.12/3215-ConsolidateBlocks-drop...

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---
fixes:
- |
The ``Collect2qBlocks`` pass had previously not considered classical
conditions when determining whether to include a gate within an
existing block. In some cases, this resulted in classical
conditions being lost when transpiling with
``optimization_level=3``. This has been resolved so that classically
conditioned gates are never included in a block.
Fixes `issue #3215 <https://github.com/Qiskit/qiskit-terra/issues/3215>`_