See link below.
uk-tier-2-employer-sponsored-visas/swit ... 88997.html
My understanding is that the restriction applies if you qualify to switch to Tier 2 General FROM Tier 2 ICT with the same employer.
However, to apply for Tier 2 General, your sponsor has to complete the full and proper RLMT to prove you have not been pre-selected and that no British or EU citizen or settled person is available for the job, before offering you the job and applying to HO for a Restricted CoS.
You do risk your sponsor being scrutinised as HO has full access to your employment record with HMRC so you might experience delays when you eventually get a RCoS and apply for a visa or HO might heavily scrutinise the RLMT and ask for full details of all applicants who applied and why they were not successful and you were.