Georererencing strange in ArcMap 10.7.1 ?

[GeorgeRiner]

We upgraded from ArcMap 10.4.1 to 10.7.1. (not ArcGIS Pro, yet.)

In 10.4.1 georeferencing worked by adding the raster (we generally use .tiff files for scanned images) to the map. Then navigating to the general area of where the image would be located. Then clicking on 'Fit to Display' in the Georeferencing toolbar.  We then would add 2 or 3 (maybe 4) control points using 1st Order polynomial (affine). When things look good, we click on 'Update Georeferencing' in the toolbar and ArcMap would write out a .tfwx file for the image. If, at a later date, we needed to re-use the image, all we had to do was add the .tiff file to the map and it would snap back into georeferenced place.

Now, in 10.7.1, the 'Fit to Display' works, the adding control points works, but when 'Update Georeferencing' is clicked, the image is suddenly moved away from where it was linked to (often to locations many hundreds of miles away! - we're usually georeferencing images that cover about a 15-20 square mile area - 4 x 5 sections on a quad map, e.g.). I notice a .tfwx file being written out.  Restarting ArcMap and adding the .tiff file to the map it goes to the location that had nothing to do with the original control point links.  !?!?!

What's the scoop with georeferencing in 10.7.1?  It used to work so nicely before..

[CodyBenkelman]

to both Julio and George

Did you confirm if your TIFF file properties were set to read only?  I recommend this, to ensure the georeferencing is written to external files.  

If either of you are still testing or need this, please let us know if this resolves the problem.

Cody B

[RayMontgomery]

We have over 1,500 TIF files (subdivision plats) that we georeferenced over the last several years. These have the full set of TFWX, etc files for each plat. At 10.3, we could click a button on a tool we made, click on the map, and the sub plat would load into the map in the correct location.

After upgrading to 10.7.1, this only works part of the time. The rest of the time, the plat loads, but we have to use "zoom to layer" to see it. It has moved outside our city boundary and become many times the size of the entire city!  Changing the "no data" color to make it visible, the supposed extent is even larger- a square about the size of our state. Sometimes the image appears as a spotty black and white diagonal smear.

I have opened the TFWX file, and everything looks normal. These are not newly-scanned, so the issue is not caused by new software variations as in the other posts. These are older scans that worked fine before.

Blaming the TIF format may be looking in the wrong place. If we load one of these misplaced, or misplaced and misshapen TIF images using an older machine that still has 10.3 on it, they behave correctly.  The fault is apparently not in the TIF, the TFWX, etc, but in ArcMap itself.