First, confirm whether the related tasks of paragliding have been completed, including getting paragliding from Purja or getting a gift from the old king. If the state of the paraglider is abnormal by modifying the file before or during the completion of these tasks, the paraglider may not be displayed in the backpack.

Now that the option of finding Houston has disappeared after receiving the task from Purja, it may be necessary to try some unconventional solutions. One possible way is to reload the previous files and see if the paraglider can be displayed normally in the backpack. However, since you mentioned that the previous archive has been overwritten, this method may not be feasible.

If not, you can update the game to the latest version to see if this problem has been solved.

If none of the above methods can solve the problem, then you may need to consider restarting a new game archive. Although this means that you need to finish the previous game progress again, sometimes it is the only way to solve some complicated problems.