So we have some 2007 web parts as part of one of our products. A few months ago I ported/rewrote them as 2010 web parts and changed some things like moving the properties for each web part into the proper edit menu place, tweaking layout etc.
Now we are getting some complaints because when customers install the 2010 web parts their old web parts pages are useless and they have to recreate them from scratch.
How do I make it so that the new 2010 web parts replace the 2007 web parts on pages?
That is if a web part page has Part2007A, Part2007B, Part2007C. Currently after upgrade to our 2010 parts that page shows three invalid web parts. What I want is for that page to know show Part2010A, Part2010B, and Part2010C.
Any tips?