most points moved north 200 ft

Hey, I've been dealing with this for maybe a year - not really sure when it started.  I have many points saved on the property where I recreate, and have ever since I got the old Garmin GPS III.  Currently using Gaia iPhone 14 pro in the field, and Gaia.com on computer.  So, yeah, one day I noticed that many of my points had moved about 200' north.  Like, I look at the gps to retrieve my gamecam, even though this one is easy to find, and the point has moved from the middle of the woods to the middle of the pond.  Up on the north edge of the property, many of my points have suddenly moved totally off the property, sometimes intersecting the neighbors' houses.  I know I didn't set up my treestand in the neighbors dining room!  So, haven't spent much time figuring this out, but tonight I'm sitting here dragging waypoints back to where they belong, or deleting them.  I'm not sure yet, but it possible it's only older waypoints that were shifted.

? Anybody else seen this ?  Had a bunch of points move together?  It's like maybe some math correction was done that caused them all to display at a different location.  

Just another thing to take time on the computer instead of being out in the woods.