Swap main line to secondary

Hello,

There's still a big problem with Free Mobile regarding switching a primary account to a secondary one and vice versa....

Like many, my daughter (who is now an adult) is the primary account holder of my Free Mobile plan, so of course, I want to be the primary account holder while I am currently a secondary account.

I know that for 30 days I won't be able to attach the detached number to my Freebox plan.

So we only have 2 Free Mobile lines: my daughter's as the primary and mine as the secondary line.

If I detach the primary line by clicking "detach my Freebox plan," will it only detach my daughter's primary line and my line will automatically become the primary line (while keeping my Freebox bonus on mine), or will it detach both lines from my Freebox plan?

Because it’s not very clear?

Since it's the primary line, I'm seriously questioning it?

Thank you for clarifying this for me?

In any case, after 30 days, I can link it or them back to my box, I think?

So if both have been detached, do I need to put my line first to be able to make my daughter's line secondary?

Thank you for your help.