If edits are done to blocks you may find that those edits do not show when viewing the pages the blocks are hosted on. Even in preview mode you may not see those block changes until they are published. 

"Content Areas can show the draft version of the block, if the page and block are in the same project and that project is active."

To allow viewing of the draft versions of blocks, ensure the relevant pages and blocks are in the same active project.

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