We have over several years built up a substantial number of Inventory items which are no longer used.
Having just completed a year-end we were hoping to clear many of these items.
Although we have run Delete History/Clear files for items 3 years+ we still get the message "Inventory item appears in the history file. Cannot delete."
According to the date "Last invoiced" in the Edit Inventory screen the history is older than just the previous year.

Is there a way to purge the old history or to merge multiple inventory items into a single item?
I assume that we would then be able to rid ourselves of these items.