I'll start with the last part of the question. No, it will not affect future appointments.
As to the difference between the two centres, I should clarify that Treasury Board is responsible for federal institutions. We're primarily responsible for making sure that the public service runs smoothly. For its part, Canadian Heritage's Centre for Strengthening Part VII focuses mainly on supporting, mobilizing and informing minority communities. Canadian Heritage is also responsible for dealing with the provinces and territories. Basically, that centre has a more external orientation, whereas the centre I head at Treasury Board has a more internal function vis‑à‑vis the public service.