Same for me as well. I have close to 4 years of relevant work experience but ACS took 2 years out of that for Skills Assessment. I talked to an agent and they said that only the experience after Skill Requirement Met Date counts which leaves me with a little less than 2 years of experience.
In the requirement for 186 visa, DOHA has written "have at least 3 years relevant work experience, unless you are exempt" which is a bit vague.
I am wondering if anyone else in our situation has applied for 186 visa and if they can share their experience.