(This is a "long post" as requested, broken into clear sections.) An ActivInspire Flipchart is the proprietary file format ( .flipchart ) for Promethean ActivInspire software, an interactive whiteboard tool used primarily in K-12 education.
You are starting fresh — web-based tools like Nearpod, Lumio, or even Google Slides + Pear Deck offer better cross-platform compatibility and real-time student collaboration. activinspire flipcharts
Export old flipcharts to PDF + use a modern tool for the interactive pieces (e.g., keep notes as PDF, rebuild voting in Nearpod). (This is a "long post" as requested, broken