Usually, yes. Based on the community report, after a shutter replacement on a Canon 5D Mark III, the reported shutter count no longer matched the camera’s prior total and appeared to start over from a lower number. In practice, shutter count reporting can depend on the camera model, the service procedure, and the software used to read it, so it may not always behave identically across all bodies. But a shutter replacement can result in the reported count being reset or no longer reflecting the lifetime total actuations of the camera body.