I noticed that the problem has recurred again. Again the steps suggested fixed the problem.
What causes it to keep recurring?
This problem has regressed, with many canonical links pointing to a foreign blog.
The last time I fixed manually via SQL commands to correct the entries in the yoast indexable table. I did not run the steps that you suggest above because your post came in two days after I already resolved it via brute force. This time I did try the steps that you present.
it appears to have worked to correct the canonical links. I am still concerned that the underlying cause of the issue may not be corrected, and the the issue could recur.
Any advice?