Guides

Bank imports fail for a short list of boring reasons. These pages name them, cite Intuit's own documentation where it exists, and skip the filler.

"Some info may be missing from your file" QuickBooks' catch-all CSV rejection, and the eight things that actually trigger it — starting with the 350 KB limit nobody mentions.
How to convert a PDF bank statement to QBO Read in your browser so the statement is never uploaded. What works, why a scan cannot, and what to check.
QuickBooks imported every date as 01/01/1970 That date means QuickBooks could not read your date column. Worse is when the dates look fine but the day and month are swapped, and nothing warns you.
QuickBooks Online CSV format requirements The 3-column and 4-column layouts, the allowed headers, the date and amount rules, and where real bank exports break them.
How to convert a bank CSV to a QBO file What Web Connect actually is, what FID and INTU.BID do, and why duplicate imports happen.
How to convert a bank CSV to an OFX file The format most accounting software would rather have than a CSV, what is inside one, and which software takes it.
How to convert a bank CSV to a QIF file The simplest import format, and the one thing it cannot do: QIF carries no transaction ids, so overlapping imports duplicate.
QuickBooks will not re-import a Web Connect file You deleted transactions, imported the same .QBO again and nothing came back. Why QuickBooks skips them silently, and how to get them in.

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