
Like John, I see no way that renaming your normal template will help with this. Instead, you want to be looking for older copies of that template or backup copies. The Normal template is the default repository for AutoText.
You can store your AutoText and Building Blocks elsewhere.
AutoText is stored in your normal template by default. Other building blocks are stored in your Building Blocks.dotx file by default. I try to avoid using either and store in other templates.
See my writing on the topic: Where Can Building Blocks Be Stored?