When aligning a subset of images within an already processed chunk the 'alignment time' property in 'chunk info' is overwritten with the time taken to do this most recent alignment, even if it was just a couple of images in a few seconds, so you lose how long it took to originally align the complete dataset, and could be misleading in some cases.
A related question, does the 'matching time' in chunk info also include time to detect points, and if not is this stored anywhere?
Thanks