Function MigrationFailure

src/tracks/ui/TimeShiftHandle.cpp:691–696

   }

   [[noreturn]] void MigrationFailure() {
      // Tracks may be in an inconsistent state; throw to the application
      // handler which restores consistency from undo history
      throw SimpleMessageBoxException{ ExceptionType::Internal,
         XO("Could not shift between tracks")};
   }

   struct TemporaryClipRemover {
      TemporaryClipRemover( ClipMoveState &clipMoveState )