Enhancement Pack

Issues Resolved

• [#15570] PB004 – Fixed an issue where the special discounts for certain items were not applied to sales orders, ensuring discounts now pull through correctly for all relevant items.
• [#17590] COM006 – The `URN` popup now reliably appears when posting a credit note in `POP` and on batch posting forms, ensuring consistent visibility of reference numbers.
• [#16702] SOP016 – Improved the message shown when additional charge lines are present in the Back-To-Back process, making it clear these lines are not supported and preventing confusing errors.
• [#17628] SL009 – Added validation to the `Memo` field in the `Customer Memo Import` to prevent errors when importing text exceeding 1000 characters, ensuring users receive clear feedback if the limit is exceeded.
• [#17803] STK020 – Items on the `Import Stock Levels` page now display correctly by using the `StockItemStatusID` to determine active status, ensuring items are no longer hidden due to an invalid or outdated inactive date.
• [#17807] POP022 – Fixed an error that appeared when editing a comment line, allowing comment text to be amended smoothly without popups and improving stability when adding or saving lines in the `POP return line` form.
• [#18373] STK018 – Fixed an issue where opening the `View Stock Details` form could cause a crash, now showing a clear error if the `button panel` is missing and preventing unexpected errors when viewing stock balances.