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In this version we disabled that all assets automatically will be added to the Find index. If you need to add Digizuite asset to the index, then follow this guide. DFE 2.2.0 - 9 Indexing Assets with Episerver Find
TinyMce
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The valid insert formats is now controlled by the config <tinyMce validInsertQualities="50036,50035" />. See DFE 2.2.0 - 3 Setting up Episerver