I recently purchased the light speed 5 relic rebel token and it did not upgrade all my skills to level 7. I used it on my saw gerrera character and he did get the boost to 5 tier relic, my leader ski...
Ideas
If that's the case, then it's a bug, yup. Plenty of people have made the mistake of buying LSTs thinking it'll upgrade Zetas and it's still happening. You can blame the players, but it's badly designed if players are making mistakes. They really should have made it clearer by now, as people are purchasing these with money.