Let me summarize, and probably conclude this thread since our protracted conversation has not yet resolved the issue. Sberman has been patient in trying to help me work through this issue and I thank him. I feel that further efforts will be “beating a dead horse.”
To sum up, I migrated the data base from my old MacBook Air, which is 10 years old, running OS Big Sur to my newly purchased MacBook Air M3 running OS Sonoma 14.4.1. The issue is that I have not been able to set my preferred Home Page using the process in Safari 17.4.1 – Settings: General. Safari continues to open with the original Start Page. Sonoma and Safari are up to date. All my data (browsing history, book marks, etc.) migrated fine and I’ve not had any issues using Safari 17.4.1.
So, I can comfortably live with the current Start Page as it’s easy to navigate quickly to other web pages and sites. Consequently, it doesn't make sense for me to continue to try to resolve the issue. I would be interested to learn, however, if any one else has experienced this problem and was able to resolve it.