Record each purchase separately
Keep purchases separate when their date, supplier, or price differs so the remaining quantity stays tied to the correct cost.

Import older purchase history from CSV
- Open Materials and choose Import history.
- Prepare columns named material, supplier, original_quantity, remaining_quantity, unit_cost, and purchased_date.
- Use the material’s exact name or Meldsy ID and dates in YYYY-MM-DD format.
- Paste the CSV or choose a file, correct any reported rows, then import.

Validate material names, quantities, unit costs, and dates before adding historical lots.
Correct an inventory count or unit cost
Use Adjust stock to correct the remaining count, the cost per unit, or both. Choose the reason that best explains the change and add an optional note when the reason alone is not enough.

- Count correction fixes a recount without pretending inventory was consumed.
- Cost correction fixes the recorded purchase price.
- Loss or damage, used outside an order, returned to supplier, and Other keep operational changes clear in the history.
- Use Remove stock when the whole remaining lot is no longer usable; the entry and its cost history remain recorded.
Closed orders keep their recorded costs
When an order’s costs are frozen, later changes to a material’s price do not rewrite the historical dollar total. This protects financial reporting from silently shifting with today’s setup.
Delete only a mistaken depleted entry
When a purchase lot reaches zero, Meldsy keeps it as purchase and usage history. Delete that depleted entry only if the original lot itself was entered by mistake; do not delete valid history merely because the inventory is gone.
If inventory looks unexpected
- Check the material’s inventory history for manual changes and received lots.
- Confirm listing recipes use the intended unit and per-item amount.
- Review post-production choices on recent orders.
- For synced filament, compare the underlying Bambuddy spool values.