Changing slug of all posts

Change the Permalinks structure as you mentioned, but also add (or change) the following line for all the other CPTs:

$rewrite->with_front="false";

Setting with_front to false will strip off whatever prefix you have listed in your Permalink settings.

If setting that up and hitting the Permalinks page to flush rewrite rules doesn’t immediately fix the problem, you might need to call unregister_post_type() for each existing CPT before re-registering them, as they can get cached pretty hard in some cases.

Related Posts:

  1. Remove slug from custom post type post URLs
  2. Redeclare/Change Slug of a Plugin’s Custom Post Type
  3. Custom Post Type Slug / Page Slug Conflict – Prevent use of reserved slug on page save?
  4. Custom Post type & Taxonomy URL structure
  5. custom slug for custom post type
  6. Slug Formatting : Acceptable Characters?
  7. Get list of all registered post types slugs
  8. Combining Multiple Taxonomies in one URL
  9. Taxonomy archive with same slug as custom post type?
  10. Taxonomy page returns 404 page not found
  11. Custom Post Type – Same Post Name, Different Post Type
  12. Priority for Categories, Tags, Taxonomies, Posts, Pages and Custom Posts with same url
  13. Setting a title on a Custom Post Type that doesn’t support titles
  14. Custom Post Type pagination when CPT ‘rewrite’ rule and a page have the same slug
  15. Remove Slug from Custom Post Type results in 404
  16. Force unique page slugs across all post types
  17. Custom Slug for a custom post type and default post
  18. Interesting Custom Post Type Slug with Taxonomy and Custom Field
  19. Rewrite CPT slug with two taxonomy slug instead of one
  20. Get slug to point to different content of the same post
  21. WP query by custom post type slug/name
  22. Remove Taxonomy Slug when No Taxonomy is Assigned to Custom Post Type?
  23. Custom Taxonomy breaking pages permalinks
  24. Using custom post type parent as slug
  25. Rewrite rules for custom post type slug
  26. Make slug as ID Number for custom post types
  27. How to remove slugs from multiple custom post types
  28. Custom post type and taxonomy slug issue
  29. Does WordPress limit the length of slug names for Post Meta or Terms?
  30. Wrong generated page_name/slug on first publish of custom post type
  31. Stop / prevent WordPress from updating permalinks of custom post type
  32. Append date to custom post type url slug
  33. CPT custom archive template does not get loaded
  34. Change custom post type slug from plugin options
  35. How to add a post slug to a url?
  36. How to target a specific custom post type post and its all children and grandchildren?
  37. Custom rewrite url category
  38. Index page with the same id as the slug
  39. Allow duplicate slugs for custom post type with taxonomies
  40. Nested Custom Post Type or Custom Post Type Parents?
  41. Programmatically rewriting slug through functions.php but returns 404
  42. Create a custom php page and load it at a specific slug
  43. Custom Post Type with Same Page URL
  44. How to prevent a CPT’s slug and page slug from conflicting with each other?
  45. Custom Post Slug same as Parents Category Slug
  46. Including taxonomy term before post type breaks top level pages
  47. Auto Slug Generation for Custom Post type
  48. How do you create %post_type%/%postname%/ permalink structure?
  49. Slug Confusion Between Post and Custom Post types?
  50. How to find a specific post_type using its “rewrite slug”?
  51. Different slug taxonomy for two different CPT
  52. How to add current custom taxonomy slug to body class
  53. Change Slug of a Custom Post Type
  54. How can Custom Post Type and a page have the same slug?
  55. How to get postname in custom page?
  56. WordPress different templates for same type custom post (but different slug)
  57. Custom Post Type Advanced Slug
  58. Apply template by path/slug related to custom post type?
  59. Custom Post Type to replace Woocommerce products – page not found error
  60. Custom Post Type for Shortcode Use – Prevent it display as a post (with slug)
  61. Custom Post Types and Removing Slugs – should we do it?
  62. Need to return a string as permalink insted of str_replace
  63. How to controll the Posts post type and general wondering about WP data structure
  64. Under What Conditions Can I name my CPT the same as my CPT Page?
  65. How do I set a post slug automatically based on taxonomy?
  66. Custom rewrite rule based on other custom post type title
  67. Use custom post type taxonomy between cpt slug and name
  68. Remove custom taxonamy slug with pagination
  69. Custom Post Type not using correct page template
  70. WordPress doesn’t respect Page slug in custom post type url pagination. Keeps getting removed
  71. Add %post_id% to slug of custom post type and prevent the “unique slug” thing that WP does?
  72. Output all terms slugs for a loop filter
  73. add .html to custom post type with WPML
  74. Custom post type post_type_link gives “page not found” on any other custom post type
  75. Two CPT: one is using part of the custom rewrite slug from the other
  76. WordPress page not showing up – replaced with last 10 posts?
  77. Custom permalink rewrite rules – how do I fix this?
  78. Display a Custom Post Type within another with hierarchically slug
  79. Problem to get the link of the default ‘post’ post type like the orther custom types
  80. Can I override the permalink/slug on creation
  81. Get the custom post type slug but remove the rewrite prefix?
  82. Rewriting archive page slug to be different than custom post type slug
  83. Get full control over custom post type url
  84. custom post type archive slug vs. custom page template
  85. Can’t make permalink of CPT work
  86. How to make nested custom post type slugs work
  87. Custom Post Type Rewrite Rule
  88. How can I retrieve the slug for a custom post type via name?
  89. WP Query Post Type with same Taxonomy name
  90. WP Query WordPress Post Type with the same Taxonomy name
  91. Is this the correct way to add post-slug input field?
  92. Hide custom post type slug url from search engine [closed]
  93. Custom post type Premalinks main page and details page
  94. Is it possible to use a post name in a custom post slug?
  95. Custom slugs with dates & IDs on Custom Post Type
  96. How to change permalink structure off default posts and also CPT’s posts
  97. Add post id to url instead of WordPress default -2 suffix
  98. Taxonomy Archive URL + Template
  99. Custom post type slug localization
  100. How to get taxonomy category in permalink for each taxonomy OR How to give a parent page to a given taxonomy?