Hey folks. There was a miscommunication here but don't fret as no one should have lost out. There was a login-check to ensure existing packs were swapped for an equal value in Portable Packs with the new values. You should notice you had more Portable Packs than you had the day before to account for this change. An an example if you had had 3 tiny and 5 normal packs before the update, you should have 18 tiny and 20 normal post-update, keeping the total 78 Skilling stations, same as before.
I just happen to have Jagex reply in my copy and paste.
This was Mod Cam on Reddit earlier today.