Force Regen is equal to Active Regen, This process is done when conditions merit during Driving
Stationary de-soot , is just that, its more aggressive, It may take 2-3 Times to clean soot, Ash will accumulate over time.
I have been Stationary de-sooting vehicles for 12 years. IMO 2-3 Times yearly Stationary de-sooting will aid in less ash accumulation.
Also de-sooting helps (clean) turbo mechanism moving freely. In Ram Dsl engines, the D-max has DPF Injector downstream of turbo.
Yes I recommended doing de-sooting just prior to changing oil..