TCT cubes compression and PSA deletion

Hello,

We installed technical business content in our 7.4 Dev system(using SPRO>Set up technical content). I have few questions on this.

I don't see TCT cubes' compression steps or PSA deletion steps in any chain(For example in chain 0TCT_C21_INIT_DELTA_P01). I can add these steps, but wondering if I missed to install something on this front.

Please advise if these have to be added by us only...

Thanks