ANALYSIS:
Disappearance of address in e-cas clearly shows that they are updating or working on with our files. The result of which is not 100% positive, rather it depends upon the outcome of the BI or Medical or if any other additional documents which have been received by the Visa Office.
For those who are waiting for MR, if the cic has completed the BI, then most probably the applicant will receive the MR;
For those who are waiting for PPR, if the cic is satisfied with the medical result, then surely the applicant will get the PPR;
same thing with those who submitted the passport for stamping, if cic received it and stamped the visa, then the address will disappear to update the system.
In most cases the result of address disappearance is positive since we are in the nearly in the last stage of our application where very few are denied especially in the case of PNP applicants who already got their approval in their respective provinces.
In my case, (waiting for PPR) my address disappeared on 17th of December, then my dependant receive ADDITIONAL MEDICAL REQUEST on 26th December for her sputum and another x-ray since she was found to have TB in her initial xray result. My address reappeared on 6th of January, that is, after they sent the additional med. request.
Others got a letter for any requests, whether it is MR or PPR, depending upon on what they are waiting for, or others might NOT get/receive anything (letter, etc) because of the reason that cic are just just updating their files with whatever documents they received. It could be incomplete and they are still waiting for further results that's why they are not receiving anything. The thing is - address disappearance means they are surely working on with our files...