Conceptual VS Perfect Anatta-understanding

The outsider ordinary people of Buddhism don't have anattā-understanding in any mind-moment. They never know, so they never do anything follow to it.
The buddhist ordinary people, the practitioners, have a conceptual anattā-understanding in some mind-moments, but it still being a concept. So, they do something follow to it sometime, but sometime they forget, not be mindful on, it and do some improper things, too.
The sotāpanna have the perfect anattā-understanding in every mind-moments, so they do everything follow to it.
If you understand like that, every sutta are the answer for your question.
And the reference sutta is the end of Sutta. Ma. Mū. Alagaddūpamasuttaṃ:

"In the Dhamma thus well-proclaimed by me — clear, open, evident, stripped of rags — those monks who have abandoned the three fetters, are all stream-winners, steadfast, never again destined for states of woe, headed for self-awakening. This is how the Dhamma well-proclaimed by me is clear, open, evident, stripped of rags.
...
"In the Dhamma thus well-proclaimed by me — clear, open, evident, stripped of rags — those monks who have a [sufficient] measure of conviction in me, a [sufficient] measure of love for me, are all headed for heaven. This is how the Dhamma well-proclaimed by me is clear, open, evident, stripped of rags."

What you did, is what you take. If you still understand anatta as a concept, then your fetters still going on. So, the effect is not the same as sotāpanna, who does every moments of his life by anattā-understanding.