Transformation - a process in Time - has been described as the underlying principle (or assumption) of nomadic hunter-gatherer life and spiritual belief - a metaphysics to which I believe Man is destined to return, but in a freely-chosen and conscious way (Final Participation)
Most philosophy (and classical Christian theology) assumes that Space is primary, and therefore end-up (when pushing analysis to the limit of metaphysics) by discarding Time.
For instance, Plato had the ultimate reality as a Time-less realm of eternal, archetypal forms. Classical Christian theology follows this by making God outside of Time; in an eternity in which past, present and future are one.
But if, instead, we regard Time as the primary reality, then things look very different. Things exist in Time, which means that their reality stretches back either to eternity or to when they are made. Things are not defined by their cross-sectional 'spatial' properties - because they exist longitudinally, through-Time.
What we see now is a probably-ephemeral property of an entity defined as a self that goes backwards... More exactly, the entity is (in physics terms) a process. Its cross-sectional properties may, probably will, change - but it stays itself because it is lineally related to its earlier selves.
More simply, the ultimate entities are Beings, and Beings are distinguished historically. There need not be any specific thing or things about a Being that remains constant through the changes a Being undergoes in Time. It stays the same being, even if everything about it has changed.
In a system in which Time is primary, the 'units' are Beings, and the principle of their continued reality could be described as continuing-Life; and continuing-Life may entail Transformation.
A Being may transform (like a caterpillar to a butterfly, or a Man to a god) so completely that nothing about it remains unchanged - yet it is the same Being; lineally the same and going back forever without beginning.
So which is primary, Space or Time? It cannot be both although it could be neither. The question is one of metaphysics, hence answerable only by primary, direct personal intuition - each for himself. But unless asked and answered; you will merely passively, unconsciously, be absorbing the metaphysical assumptions of others.