Check how your menu pieces connect: which category an item belongs to, which option group an option belongs to, and which items use a specific option group. You can trace these from the Parent and Used In sections in the Owner Dashboard or Owner App.
Which category does an item belong to?
In the Owner Dashboard: Menu → Items tab → select the item → look at the Parent Categories section. It shows which categories the item belongs to.
In the Owner App: tap Menu → use the dropdown to select the menu → go to Items → tap the category → tap the item → scroll down and tap Categories to see all categories it belongs to.
Which option group does an option belong to?
In the Owner Dashboard: Menu → Options tab → select the option → look at the Parent Option Groups section.
In the Owner App: tap Menu → select the menu → tap Options → tap the option group → tap the option → look at the Used In section.
Which items use a specific option group?
In the Owner Dashboard: Menu → Option groups tab → select the option group → the Used in these items section lists every item that uses it.
In the Owner App: go to App > Menu → select the menu → make sure you're on the Options toggle → tap the option group → tap Edit → under Used in these items you'll see the items that use it.