Pre-filling a t:slim cartridge

What is the correct procedure for loading a t:slim cartridge which has been pre-filled? What do you do when the pump tries to remove air from the cartridge during the normal load procedure??

I don’t believe you can pre-fill a tslim cartridge, as the pump prompts you to load an “empty cartridge” when changing. Once loaded, the pump removes the air so you don’t get false doses if insulin. I think pre-filling will cause the pump to reject that cartridge, unless anyone else has figured out a way to do it! Hope that helps avert your question

*answer

There is a way to do it though I have not tried it yet. There is an active tslim group on Facebook, which is where I first heard about it.

Install the loaded cartridge, follow the prompts, fill the line, that's it.
I inadvertently touched replace cartridge after I had already loaded a new cartridge. I was told just follow the prompts and when you fill the infusion line, you must at least pump 10 units into the line. This would work for a prefilled cartridge as well.