Hi everybody. 

We have a issue with visualizations.

Our environment is multi-node (different servers for PG, Central, Engine, Proxy and Filehsare).

We recently made out a migration (clean installation + export and import apps, extensions and connections). Migration was from February 2019 to September 2020.

Some imported applications have errors in visualizations (Invalid visualization). When it was extensions only, we suggest update it or replace it. But in the case of native graphics we do not know why or how to solve it.

Has it ever happened to you? how could you solve it?

thks in advance.