attributes order

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Hello,
in attribute manager
if we add a new attribute and move it in another order
the data in all the attributes below in the existing products page will be moved
for example an existing product

alpha: 1
beta: 2
delta: 3

in backend we add epsilon field and move it in an other order

alpha
epsilon
beta
delta

on the same product:

alpha: 1
epsilon: 2
beta: 3

is a correct behavior ?