How do I get my previous save data from Beta 1.3 to Beta 1.4? I want all my outfits, and designs from the previous beta to be in version 1.4 but I don't know how. Is this possible or will I have to start fresh and buy all my patterns and make all my previous outfits with a new avatar?
That's the unfortunate thing with beta releases; you cannot bring over save files. This is because each release has a lot of major core changes, so your save file simply wouldn't work right. When Tailor Tales is out of beta and released as an actual demo, then you can keep your progress and all of your outfits.
Until then, each beta you have to start over. However, I do give previous beta players some starting gold and exp.