Missing card(s ?) in collection

Hi, I just use the Disenchant All button yesterday but noted some cards gone (like Violet Teacher or Frostwolf Warlord). I´m pretty sure I have that cards before but now I only saw the uncraftable versions. I already use some filters like Core, Legacy or Classic to see if they are there but no luck. Is supposed not keep my versions for when the core set roll out ? if that is the case, why the Disenchant All does count for them if they are not extra copies (they are from different sets not the same card).

I need to know if this is the case so I can get my cards back before use the dust.

Thanks in advance and sorry for my bad english.