You are correct assuming your 1099-DIVs only include the federal 1099-DIV worksheet, Box 1a, US Government Obligations from the list below (from TurboTax help for the VA line 4), then they should mat...
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You are correct assuming your 1099-DIVs only include the federal 1099-DIV worksheet, Box 1a, US Government Obligations from the list below (from TurboTax help for the VA line 4), then they should match. Many times deleting the 1099-DIV entries and re-entering manually clears this disconnect.
If you are using an online version you could also sign out of your TurboTax account and clear your cache/cookies and then sign back in as well. In my desktop version the numbers flow correctly so I am unable to duplicate. Here is a link that may be helpful if needed.
"From federal Schedule B, Interest Income Smart Worksheet, Box 3, US Savings/Treasury Obligations plus OID Interest Income Smart Worksheet, Box 6, OID on US Treasury Obligations plus federal 1099-DIV Worksheet, Box 1a, U.S. Government Interest less related adjustments."