October 2018: He Left the Mueller Detail. He Kept Flynn and Manafort.

He was on detail from the Justice Department’s national security division until early October and was involved in several of the most public elements of the Mueller investigation, including Flynn’s and Manafort’s plea deals, and Manafort’s convictions. The New York Times interactive on Mueller’s prosecutors, Nov. 30, 2018

Documented In early October 2018, Special Counsel spokesman Peter Carr said Brandon Van Grack had concluded his detail to the Special Counsel’s Office and returned to the National Security Division. Carr said he would continue to represent the office on pending matters already assigned to him. The Hill, CBS, AP, and Politico reported the same Carr statement. Kyle Freeny was the other prosecutor named in those stories.

The New York Times interactive (Nov. 30, 2018) said the detail lasted until early October 2018, that he worked Flynn and Manafort, and that he remained involved in some SCO work after returning to NSD. That is reporting on the spokesman and the docket, not a secret second job.

He did not disappear from Flynn. He was still government counsel when Sidney Powell took the case. He was still on the caption when he filed the one-sentence withdrawal on May 7, 2020.