This is similar to the idea for Remedy ITSM here: SmartIT RKM - Last Modified Date should only change if 'visible' changes are made to knowledge articles but is wanted for Remedyforce and specific to the linking feature.
When a staff member links to a knowledge article in Remedyforce, the Last Modified Date updates even if there were no changes to the article content. This is misleading as the information contained in the article could be out-of-date but the Last Modified Date suggests it is current.
My idea is to stop the action of linking a record updating that field and instead create a separate field to capture that information like "Last linked date". This would provide clarity to staff and also help with reporting.