Rogue (vanilla / unchained): bookish rogue and quickened spell-like ability

[Blackstorm]

As the title: how does interact, RAW, bokish rogue with quickened SLA? Does quickened SLA bound to a single minor/major magic spell, so it works only when I have that specific SLA, or it's bounded to the general "minor/major magic" talent, so even if I change the SLA via bookish rogue I still retain the use of quickened SLA?
Iknow that with the witch's hexes you must select a single hex for things like ability focus, but does it applies to minor/major magic as well? I tried to search, but I didn't find anything.

[blahpers]

You'd need to retrain your quickened spell-like ability feat to choose the new ability.

[toastedamphibian]

It goes with the SLA, not the class feature that provides the SLA. If you loose the SLA, the feat does nothing. If you switch back to having that SLA again, it resumes functioning.