Purchase Order Line Merge

This module allows users to select multiple purchase order lines from different purchase orders and merge them into a single new purchase order.

Unlike purchase_merge which works at the order level, this module operates at the line level, giving more granular control over which specific lines to consolidate.

Key features:

• Lines with the same product, unit price, unit of measure, and taxes are automatically grouped into a single line on the resulting purchase order.
• The default quantity to merge considers both invoiced and received amounts, defaulting to the available (uninvoiced/unreceived) quantity.
• The unit price is editable in the wizard, allowing price adjustments before creating the new order.
• Partial merges are supported: the remaining quantity stays on the original order.
• Orders that reach zero amount after the merge are automatically cancelled.

This module also adds the Qty Invoiced and Qty Received columns to the Purchase Order Lines list view for better visibility.

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