Sudden Death of Amur Cherry

[Treedoctor_Msk]

Could be vert wilt but did you eliminate common cankers such as cytospora or botryosphaeria or even psuedomanas?
Quite a few borers of stressed prunus as well. Monilinia often goes misdiagnosed in favor of other pathigens as well.

Thank you!

Yes, Pseudomonas is my another version.

Here some picks of the case. Can you comment?