There could be various reasons for the same. For instance:
- Appointing people with right skill set;
- Infusion of fresh contribution/ investor;
- Change in existing understanding/ terms of the Partners;
- Resignation of existing Partner or Designated Partner;
- Incapability of existing designated partner to take charge; etc.
The removal may be voluntarily (i.e., at the Partner’s own volition) or through vacation by other Partners.