Ok.
There are some components, where one needs to use initialDC=yes, because they have no initial conditions fields. Example: Diode. (With initial DC=0, they always start with 0V at t=0)
However, I want to have different initial conditions as initialDC=yes calculates. So, what I do is to force the voltages to the desired initial conditions using a voltage source. To make the voltage source not affect transient simulation, I add a 1H inductance in series. This way I emulate the InitCond element of ADS.
This is the workaround I am successfully using at the moment.