[wp-trac] [WordPress Trac] #55254: Site Editor: Template Part Areas are not exported

[WordPress Trac]

#55254: Site Editor: Template Part Areas are not exported
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 Reporter:  Frank Klein   |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Editor        |    Version:  5.9.1
 Severity:  normal        |   Keywords:
  Focuses:                |
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 To reproduce:
 1. Open any block theme template in the Site Editor.
 2. Add a Header block, with any content.
 3. Save the template, and the template part.
 4. Go into the database. You'll see the `wp_template` and
 `wp_template_part` post types, as well as the `wp_template_area` term all
 working well together.
 5. Export the template and template part. Copy these to the theme, and
 reset any customizations.
 6. See that the Header block is now a generic Template Part block.

 Cause: During the export, the template part area is not added to the
 template part block.

 The saved block might me something like `<!-- wp:template-part
 {"slug":"header"} /-->`, but it needs to be `<!-- wp:template-part
 {"slug":"header","area":"header"} /-->`

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Ticket URL: <https://core.trac.wordpress.org/ticket/55254>
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