I know that there is support from UUID in 1.20-beta. I am using this version and I realize that UUID works well everywhere else but while importing a new pipeline from text it is not recognized.
So as workaround I have to remove UUID while importing and once piepline is imported I have to change it manually.
Rproduction step is simple :
1) Use "create pipeline from text"
2) Paste a pipeline using UUID
3) Error message
LEt me know if more information is needed.