[wp-trac] [WordPress Trac] #22985: Edit thumbnail image only - loses all sub sizes in attachment meta

[WordPress Trac]

#22985: Edit thumbnail image only - loses all sub sizes in attachment meta
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 Reporter:  lewismcarey   |       Owner:  markoheijnen
     Type:  defect (bug)  |      Status:  assigned
 Priority:  high          |   Milestone:  3.5.1
Component:  Media         |     Version:  3.5
 Severity:  critical      |  Resolution:
 Keywords:  has-patch     |
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Comment (by markoheijnen):

 If I'm correct all the data still exists in get_post_meta( $post_id,
 '_wp_attachment_backup_sizes', true );
 So then it looks like we still can do some kind of merge with the
 attachment meta data.

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Ticket URL: <http://core.trac.wordpress.org/ticket/22985#comment:14>
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