For my custom post type "Lodges" I have a repeating field group containing the field "Species". I have a view that loops through each RFG and displays content from it including the field "Species". I have specified that the output should be sorted by field Species, ascending as a string.
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I checked the problem URL post in the backend:
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I can see that within the "Fish Species" Repeating Field group, the Halibut is not the first entry. Halibut is set up as the 6th entry.
And with your view - to display the same order as per the Repeating field group, you should sort your view with the field "Field - toolset-post-sortorder" which I have set at Ordering section of your view.
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I can see on the frontend the repeating field group items are displayed as per the sort order set in the backend.
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