Mohammad E. answered 06/22/19
Four Years of Language Training
There are many examples of sentences where rearranging the words no longer necessitates a comma, but this applies only to that particular arrangement. In each case, there are specific rules which call for a comma to be used.
In the case of the sentence:
In order to pass [...] data protection, the customer must correctly answer [...]
...the comma is necessary because the sentence begins with a prepositional phrase which is a dependent clause. Any sentence which begins with a prepositional phrase cannot stand on its own and, therefore, necessitates a comma to separate it from the main clause.
When I went to the park, I was chased by some ducks.
If the dependent clause comes at the end, there are no rules which call for a comma, so you don't need one.
For more info, check: https://www.grammarly.com/blog/comma/