Problem Description / Pain Point

When using the “Copy from another document” function in Purchase Orders that contain a large number of lines (100+), the line selection behavior is unreliable and confusing.

This makes it difficult for users to confidently copy purchase order lines, especially in high‑volume, daily operational scenarios.

Steps to Reproduce

1. Navigate to Accounts Payable > Purchase orders > All Purchase Orders
2. Open a purchase order that contains more than 100 lines
3. Click Copy from another document
4. Select Copy from All
5. Attempt to select or deselect specific lines

Current Behavior

• The system continuously refreshes when selecting or deselecting lines
• All lines appear to be selected, but they are not visually marked
• The user cannot clearly determine which lines are selected or deselected
• The refresh behavior makes the selection state inconsistent and unreliable

Expected Behavior

• All lines under Lines should be clearly marked as selected
• Selecting or deselecting lines should not trigger repeated refreshes
• The UI should accurately reflect the selection state at all times
• Users should be able to confidently confirm which lines will be copied

Proposed Solution / Idea

Improve the line selection handling and UI stability in the “Copy from another document” function by:

• Ensuring selected lines are visually marked consistently
• Preventing unnecessary screen refreshes during line selection
• Maintaining a stable and clear selection state, especially for large purchase orders
• Aligning the visual indicators with the actual selected data

This would significantly improve usability and reduce operational errors when copying purchase order lines.