Transfer to Telus PureFibre from old copper service.... what to expect?

They will not need to replace the jacks and you shouldn't need to move the furniture unless something is blocking the jack closest to where they'll install the fibre gateway. Essentially once installed, they'll connect it to a jack and their phones should work as they did before. The only thing I'd check for is if there is a battery backup on the fibre gateway so that the phone service may still function for a short time in a power outage. I ended up adding a full UPS battery backup to mine as it powers my router also.