Hi. I returned this week after soft landing. Called the Health region of the area i was residing and sent them the Medical Surveillance form which i received from Immigration Officer at Toronto Airport. They emailed me couple of forms some days later which i had to take to the doctor. They said i can get the procedure done now at my own expense (Doctor Fee and Xrays cost about $180. More if other tests needed) or wait for three months before initiating the process so that the cost will be covered under OHIP. If i choose to leave the country, i just need to call them before i leave so they can make a note in my file and then contact them again when i am back. I chose the last option.
On my question to the TB nurse regarding the potential negative impact of it on my immigration file. She replied.
"It's totally legal. Your responsibility was to report us within 30 days of landing which you did. Now If you don't return within six months after landing, we will close your file and inform IRCC that you have left the country. On return, the airport officials might ask you that you didn't complete the medical surveillance. They will provide you forms again and you will have to contact us again once you move here permanently. The process lasts for atleast six months or more depending on evaluation by the doctor and the number of follow up visits and tests. It's best for you to defer it until you return as all your costs will be covered under OHIP and you can get the procedure completed with ease"
The response was satisfying for me and i returned happily two weeks post landing.
Good Luck!