Can I get the lost files back?

Only if a copy exists somewhere else, such as on the user’s device, in an email or in a backup you made. Data written only to the deployment’s file system shouldn’t be counted on. Move storage first, so no more is lost, then ask users to upload again.

Why did it work while I was testing?

While you test, the app runs in your workspace, where the files it writes sit next to your project files. A published app runs from a snapshot of your project’s files, and Replit’s docs say not to save or rely on data written to a published app’s file system. Move the data to a database or object storage before you publish.

Why check the whole app, not just where the data is stored?

Data stored in the wrong place is rarely the only problem in an app built this way. The Launch Check looks at storage, sign-in, data access and payments together, so you fix everything worth fixing once.

Can you fix it for me?

If one bug is the whole problem, the App Fix Ticket covers it: a written diagnosis first, then the fix. If the app has more going on, the Launch Check is a written check of the whole app. Each issue found is rated critical, high, medium or low, with where it is and how it was confirmed. No issues worth fixing, no charge. If the Launch Check finds nothing rated medium or higher, Simon refunds the full $450. You keep the report either way.

Replit App Loses Files or Data After Deploy? Fix

Short answer

Replit says to avoid saving and relying on data written to a published app’s file system. A publish is a snapshot of your project’s files, so treat anything the running app writes as temporary, not as part of the next publish. Keep records in a database, such as Replit’s managed PostgreSQL, and uploaded files in object storage, such as Replit’s App Storage.

Where the data went, and the fix

01
Records saved to a file in the project
A JSON file, a SQLite file or any file the running app writes to lives on the deployment’s file system. Replit’s docs say not to rely on it. Move the records into a database: Replit’s Database is a fully managed PostgreSQL that the app connects to over the network, so republishing doesn’t touch it.
02
Uploads written to a folder
Saving uploads to a folder such as uploads/ has the same problem. Store each file in object storage instead (Replit’s App Storage is backed by Google Cloud Storage), and keep only the file’s key or URL in your database.
03
Data kept only in memory
Anything held in a variable, an in-memory cache or a session store without a database behind it is lost whenever the server stops. Autoscale deployments scale down to zero servers when idle, and a stopped server loses anything held only in memory. Write anything you need to keep to the database.

Checked against the vendor’s docs on October 30, 2026: Replit docs: About deployments; Replit docs: Deployment types; Replit docs: Storage and databases.

Rather hand it over?

Fixed scope, fixed price, paid upfront. The work happens in writing; no call needed.

Replit deployment bugUploaded files or saved data disappear after you redeploy your Replit app

Where the data went, and the fix

Records saved to a file in the project

Uploads written to a folder

Data kept only in memory

Rather hand it over?

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