What happens to my content when the move is made from the TinyMCE to the Block Editor? Any content built with the original TinyMCE editor will be converted to to the Classic block. This Classic block is basically the TinyMCE editor…but embedded inside the new block editor.

To work with your old content, you can either:

• Leave it in the Classic block and edit it just like you would with the old editor
• Use the three dots icon and select Convert to Blocks. That will break everything into individual blocks. Then, you can work with your content just as if you’d originally created it with the block editor.