Oh man.... I wanted something different when I bought my Uratama and now I feel kinda' bad that I spent a bit extra to buy one when their no longer Japan-exclusive.....
It's not direct conversion. V4 bases into EnTama, and there's differences between EnTama and V4 as V4 being bit more 'simple'. (Propably cause in western countries Tamagotchi are aimed for kids and in Japan also for teens/young adults)
V4.5 is gonna use UrTama as the source of it's programming and outlook. V4.5's not gonna be english UraTama.
As UraTama was EnTama with 3 new attributes, V4.5 is going to be V4 with 3 new attributes. EnTama/V4 has Intelligience, Beauty and Kindness. UraTama has something else, something new.
I hope V4.5 has UraTama's cooking feature