[Sirius Integration] An imported model is re-written during save

Consider a model B that imports model A. If a diagram of B contains an element of model A, as in the attached model, model A is rewritten during the save of model B, which should never happen, as A is imported read-only. This is problematic, as it potentially changes an imported model. An inconvenience for the user is that it will provoke a pop-up informing about model changes.model-import.zip