Sponsor and CoS for PBS dependent extension after ILR

[streaming]

Hi!
Assume Tier 2 dependent could still use the current dependent visa even if the original Tier 2 visa holder has got ILR; and the dependent is also allowed to extend the visa before it expires, till ILR, is this correct please?
If so, the question is what Sponsor license information and CoS should the dependent use when extending the vsia, and is there still any incoming requirement for the original Tier 2 visa holder at that point please?
Considering the case that the original Tier 2 visa holder may change job after ILR...

[iworker]

It is correct.
You can enter the old licence number and cos detail if you have them and are required to be filled if using online form.
In additional informaiton, you can mention that main applicant has since got ilr and and is not with this sponsor anymore. it is pretty straightforward.
The extension is given or 3 years.

[streaming]

Much appreciated for your reply!