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Add products to your cart and remove them from here Lets buyYes. Identifiers are what the database uses to tie progress to a crate, key, reward or rarity, so changing one leaves the old records pointing at something that no longer exists.
Concretely, changing an identifier drops:
Display names are a different thing entirely and are safe to change whenever you like, so rename the display name rather than the identifier if you just want it to read differently in game.
Pick your identifiers before the crate goes live and leave them alone afterwards. If you must change one, do it while nobody has progress worth keeping.
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Add products to your cart and remove them from here Lets buy