Weird interaction between ctrl+z and structuration relation

[BernardoFBBraga]

Model is correct when creating the relation the first time, is incorrect after ctrl+z and recreating relation

Steps to recreate bug:
1- create Nominal Quality
2- create Decimal Ordinal Dimension
3- create structuration relation between them
4-check model (no errors)
5-Ctrl+z (structuration relation is now gone)
6- create structuration relation again
7- check model (error appears "All Reference Structures of a Nominal Quality should be Nominal Reference....)

[BernardoFBBraga]

Bonus: delete all classes and check model for a nullpointer exception

[johnguerson]

Realmente tem muitos bugs aqui. Estou tentando ver todos os casos aqui.

[tgoprince]

Na real, o problem é que o CTRL+Z não deleta de verdade a relação, apesar de remover do diagrama e do project explorer.

[tgoprince]

Tanto que se salvar o projeto, fechar e abrir de novo, as relações estarão no project browser.