I have an incident report entered into the system this Jan. I left the company while this incident report was not adjudicated, probably because the company had never sent a request to have this incident report adjudicated.
Am I supposed to get a LOJ at the time I left the company?
In my limited experience with this (all second and third hand, fortunately) you will not get a letter or anything unless you try to get another cleared job. Then that incident report will jump up and bite you in the 
In the cases I’ve heard of, the individual had to get a whole new investigation to clear up the incident (whatever it was). And there was somebody on here with a similar concern who could not seem to get any info as to what the “incident” was.
My question here is that: If I leave the employer with an incident report filed a while ago, am I supposed to get a LOJ immediately in my DISS account?
I think you’re supposed to get a Loss of Jurisdiction (LOJ) if you leave a cleared job under any circumstances… I’ve known a few people who had not received any official notice of any kind until they got to their new job and that company’s security office tried to pick up their clearance and saw this big 
in their file.
What I do not know is if any of these people checked their DISS (or had their FSO check) before leaving the first employer.