When creating a blueprint in Blueprint Sandboxes with requestor chests and modifying the number of item for a request, the expected result is the blueprint saves the exact number of items per request. When placing the blueprint in the world, the item request count "resets" to the default. Creating the blueprint in the world saves the item request count as expected. Could you please look into why blueprints created in the blueprint sandbox are not "being saved properly"?
https://mods.factorio.com/mod/blueprint-sandboxes