I would investigate olive bud mite. That seems to be the main culprit for the rolled up leaves. The mites are infinitesimally small and can't be seen with the naked eye. Fortunately, they present only minor damage and treatment is not usually advised. And since the new growth is coming in unblemished, I'd suspect they might be long gone.

Many folks routinely treat summer vacationing houseplants with a systemic insecticide before bringing them back in for winter. That is an option you can pursue.

Thank you gardengal!

i have not heard of olive bud mite - i shall look it up. I’ll take your advice on the systemic insecticide, just before i bring it inside. thanks!