Mercedes Formula 1 team boss Toto Wolff says that the company's High Performance Powertrains division is "reinventing" to adjust for the impending departure of its longtime boss Andy Cowell.
A new management structure will officially begin to operate today, following the announcement earlier this month that Cowell is moving on.
Cowell will work alongside new managing director Hywel Thomas, who will have responsibility for F1 powertrains, during a period of transition.
"There are two angles to it," Wolff told an F1 vodcast.
"Obviously Andy needed a new challenge, and I completely understand that.
"He came to the decision in December that he wanted to do something else, and it was about reinventing HPP without this one single point of reference, because Andy is very charismatic, a strong leader, with a lot of skills."
New MD Thomas (pictured on the podium at the 2016 Belgian GP) has been at HPP for 16 years, formerly as HPP's F1 Power Unit Director.
Wolff is adamant that Mercedes is well versed at promoting from within when key figures leave to minimise any disruption.
"We've there before, Ross [Brawn] leaving, Bob Bell leaving, Paddy Lowe leaving, Aldo Costa leaving, Mark Ellis leaving, and we've always been able to replace with the next generation up," he said.
"Equally we have also realised in the past that there have been vacancies that we weren't able to replace from within - James Allision is probably the prime example, joining a few years ago [from Ferrari]."