In the States it has become fairly common to find an impromptu memorial where a major traffic accident has occurred. I recently on a hike ran across a memorial to someone’s favorite dog. It has become easy and acceptable to memorialize loss. Kubler-Ross in her book “On Death and Dying” described in her famous book identified five stages of grief which includes denial, arguing bargaining, depression and acceptance I would suggest that memorialization reflects acceptance.
Change and loss tend to follow similar paths. Memorializing how we worked in the past may well be a reflection of acceptance of what is being done now. As a change agent you do not need to react to every memorialization as a sign of push back Reflect carefully what is being really said and try to help your organization through acceptance.