You are correct.
The materials Netanyahu was talking about are from the Iranian
archives, and detailed efforts to obtain weapons
prior to the agreement.
There was a lot of confusion as Trump and other persons as uninformed and as abjectly stupid as he is went around saying these materials were about ongoing or current efforts to obtain weapons. Which they are not.
This, for example, caused an embarrassing snafu for the White House when Sanders said that the documents showed that Iran "has" such a program when in fact they do not prove that, and relate to what Iran at one time
had. Before the agreement.
You can read about the difference and how the WH had to then quickly change their statement to clarify that it was past tense:
White House claims 'clerical error' led to drastic change in Iran statement - CNNPolitics
This is the kind of thing that ought to concern people. Once again, Trump hears something on Fox or gets snookered by someone like Netanyahu, and makes all sorts of dumbass statements that have to then be walked back.
Tillerson and Kelly are right.
Trump has no clue about policy and is an f'ing moron and an idiot.