DataLayer appsettings.json is only used for Migrations. It is not directly used by application. Make notes

DataLayer/appsettings.json

@@ -1,6 +1,8 @@
 {
   "ConnectionStrings": {
     "LibationContext_sqlserver": "Server=(LocalDb)\\MSSQLLocalDB;Database=DataLayer.LibationContext;Integrated Security=true;",
+
+    "// this connection string is ONLY used for DataLayer's Migrations. this appsettings.json file is NOT used at all by application; it is overwritten":  "",
     "LibationContext": "Data Source=LibationContext.db;Foreign Keys=False;",
 
     "// sqlite notes": "",