Historical Spanish phonology

[pauamma]

Were miércoles and jueves pronounced with a vowel followed by the matching glide when Tagalog borrowed them (no idea when that happened but I think it would have to be between 1565 and 1900), ie starting with [miⁱɛɾ] (or [miⁱɛr]) and [xuᵘɛ]? I'm asking because it's definitely present in the Tagalog loanwords Miyerkules and Huwebes, and I'm wondering whether it happened when these were imported, or if they were already present in Spanish phonology at that time?