You can check the activity log on a board:
^ In here you can see who added who to the board. Not sure if it shows who left also, I couldn't find an activity example for that in our Trello - but it's the most likely place for it to be!
@katt_zilla You'd need to log this somewhere else in order to see the name of members who took actions that are no longer there, for example you could log it in Google Sheets with these Trellinator functions:
You can read more about Trellinator here:
Or you could write your own solution directly using the API.
@katt_zilla you should be able to get a record of board actions historically but, for the same reason that you can't see activity of members no longer there in the activity feed anyway, you would face the same limitation retroactively applying this to board actions through the API.
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