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Inventory Management Migration Guides

Already decided to switch? These guides cover exactly how to move your existing inventory data over, from spreadsheets and from specific competitor tools.

By Tibeau De Grauwe, Founder

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Switching inventory systems doesn't have to be a big project the main work is exporting a clean CSV of your current items, stock levels, and costs, then mapping those columns during import.

Each guide below covers the specific export steps for a spreadsheet or competitor platform, common pitfalls (duplicate SKUs, unit-of-measure mismatches, missing opening stock), and how to verify the migration before you fully cut over.

If you're leaving Excel or Google Sheets, start with StockFlow vs Excel; if you already use Zoho, Sortly, Cin7, Katana, or another inventory tool, open the matching switch guide for field mapping and cutover checklists.

A migration rarely fails because software can't import the data it fails because nobody physically counted the highest-velocity SKUs before trusting the new system's reorder alerts. Treat the CSV import as step one, not the finish line: spot-check your top 20-30 items against a shelf count before you switch off the old tool.

Most teams run the old and new system side by side for a few days rather than cutting over instantly. That overlap window is where duplicate SKUs, mismatched units of measure, and missing opening-stock quantities show up while they're still cheap to fix, instead of after a customer order reveals the difference.

Every guide below follows the same shape: what to export from the old system, how those fields map into StockFlow, the pitfalls specific to that platform (unit-of-measure differences trip up more migrations than missing data does), and a short checklist to confirm the numbers match before you rely on them.

None of this requires downtime on your storefront or warehouse floor. Teams typically keep selling and shipping from the old system while the new one is populated and verified in the background, then flip the switch once a spot count confirms the imported numbers are trustworthy not before.

The data you need is the same whether the destination is a cloud tool or something you host yourself: a full item list with SKUs, on-hand quantities per location, unit costs, and supplier or reorder details. Locations, categories, and any custom fields (lot numbers, expiry dates, bin positions) come next they are what turns a flat item list into a working system, not just a copy of the spreadsheet.

Migrating from spreadsheets to self-hosted inventory software adds one extra step that a hosted tool skips: you're also standing up and configuring the server before any data goes in. Budget time for that setup separately from the data mapping itself, since a self-hosted install has no vendor doing it for you.

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Frequently asked questions

What is the typical downtime window for cutting over to on-premise inventory software?
On-premise or self-hosted inventory software typically needs a scheduled maintenance window of a few hours to a full day, since the server has to be provisioned, the data imported, and the install tested before staff can rely on it. StockFlow is cloud-hosted, so there is no equivalent cutover window: you can populate and verify the new account while the old system keeps running, then switch at any moment with zero downtime.
How long does it take to migrate from spreadsheets to inventory software without messing up stock counts?
Most teams complete the CSV import itself in under an hour once the spreadsheet is cleaned up (consistent SKUs, one row per item, no merged cells). The part that takes longer is verification: budget a day or two to spot-check your highest-velocity 20-30 items against a physical shelf count before you trust the new system's stock levels and stop updating the old spreadsheet.
What data do I need to migrate when moving from spreadsheets to self-hosted inventory software?
The same core fields any inventory migration needs: SKU or item code, item name, on-hand quantity per location, unit cost, and supplier or reorder point information. Self-hosted tools do not reduce this list they add the separate task of provisioning and configuring the server itself before that data has anywhere to go.
Do we lose order history when switching multi-channel inventory platforms?
Not if you export it first. Most inventory migrations move current stock levels and item data, not the full history of past orders that history usually stays queryable in the old platform or an exported archive rather than being re-imported. If you need historical orders inside the new system for reporting, export them separately as CSV and check whether the destination platform has an order-import path before you decommission the old account.
What are the best practices for migrating data into a new stock management system?
Clean the source data first (dedupe SKUs, standardize units of measure), export a complete CSV rather than a partial one, map columns carefully during import, and run the old and new systems in parallel for a few days. Before fully cutting over, spot-check a sample of items against a physical count so any import errors surface while they are still cheap to fix.
What is the best way to migrate restaurant inventory software data?
Export your ingredient and item list with par levels, unit costs, and supplier details, then map those into the new system's categories rather than recreating them from scratch. Recipe or menu-item data (if your old tool tracks it) usually needs to be re-entered separately, since ingredient-to-recipe mappings rarely survive a straight CSV export.
What is inventory migration?
Inventory migration is the process of moving your item catalog, stock levels, costs, and related records from a spreadsheet or one inventory platform into another, without losing accuracy along the way. It covers exporting clean data, mapping it into the new system's fields, and verifying counts before you rely on the new system for reorder decisions.
Which solution makes it easiest to migrate legacy inventory and accounting data from spreadsheets for a growing manufacturer?
For a manufacturer moving off spreadsheets, look for CSV import that handles bill-of-materials and multi-location stock, not just a flat item list StockFlow supports both. Accounting data (invoices, payables) is usually kept in your accounting software rather than imported wholesale; what typically moves over is the inventory valuation and cost data that accounting system needs to stay in sync.

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