[No QA] Docs updates for E/A#94134 Scan and manual expense field updates

[MelvinBot]

Explanation of Change

#94134 removes the newManualExpenseFlow beta flag, making the new manual expense flow the default for all users. This changes the user-facing expense creation flow in two ways that the help site did not yet reflect:

1. Manual cash expense — Selecting Create expense → Manual now opens a single combined form. There is no longer a separate amount-only screen with a Next button. Amount, Merchant, Description, Category, Date, and the To recipient picker all appear inline before clicking Create expense.
2. Scan flow ([CFI] Show Merchant, Date, Amount Fields in the Scan flow #93854) — The Scan confirmation screen now exposes editable Merchant, Date, and Amount fields under Show more. If any one is filled in, all three become required.

What changed in the docs

Updated Create-an-Expense.md:

• Rewrote How to manually create a cash expense to match the new combined form (removed the "enter amount, then click Next" step; field labels now match the live UI exactly).
• Added a note to the SmartScan section explaining that Merchant, Date, and Amount can be entered or edited via Show more, and that filling one makes all three required.

All UI labels (Create expense, Manual, To, Amount, Merchant, Description, Category, Date, Reimbursable, Show more) were verified against the live UI and follow HELPSITE_NAMING_CONVENTIONS.md, HELP_AUTHORING_GUIDELINES.md, and TEMPLATE.md.

Related

• Source PR: feat: remove isNewManualExpenseFlowEnabled beta flag #94134
• Source issue: [CFI] Show Merchant, Date, Amount Fields in the Scan flow #93854

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@thelullabyy, please review the files changed and confirm they reflect the current behavior. Then mark this PR Ready for review.

[OSBotify]

A preview of your ExpensifyHelp changes have been deployed to https://e0cdeecc.helpdot.pages.dev ⚡️

Updated articles:

• articles/new-expensify/reports-and-expenses/Create-an-Expense