This is not possible to imbue elemental weapon with elemental attack.
As a proof below are pictures: trying to imbue Emerald Sword (fully physical attack) and Winterblade (ice attack).
(Sorry for pictures taken with phone, on screenshots the list with available imbuements wasn't visible, don't know why.)
Question Revival V contestMarch 17, 2024
Interview with Solkrin - lead of the Customer Support team at CipSoftDecember 20, 2023
Become a TibiaQA Supporter!May 09, 2023