If you have been hitting rails for two years, then yes, its expected.
Get yourself a box cutter, some sandpaper and 5 minute epoxy. Carve out as much loose stuff from the edge and the inset in the ski where its supposed to sit with the box cutter, just the loose stuff. Wrap the sandpaper around the blade and carefully sand all the surfaces you can, on the edge and in the place where it once was in the ski. Mix some epoxy up, apply to the edge and in the hole, push the two back together. Epoxy doesnt bond to HDPE plastic, so if you have any lying around, put that over the edge and clamp it so the edge is really pushed in there (plastic will stop the epoxy from bonding to the c-clamp, thats no fun). After its all set and cured, sand away the leftover epoxy and file over the joint so nothing is there to catch and rip the edge out again.
Little of what I do has any meaning or lasting significance.