To help with the transition of content from TypePad to WordPress, I would suggest the following steps to clean up the text issues you described:
1. **Spaces and Word Separation**: Use a script or text editor with regex capabilities to find and insert spaces between words that have run together.
2. **Character Encoding**: Ensure that the content encoding is set to UTF-8 in your WordPress settings. You can use a text editor to search for unusual character sequences and replace them with the correct characters.
3. **Remove “Years Past” and Extraneous Dates**: Write a script or use a text editor to identify and delete sections of the text that begin with “Years Past” followed by a sequence of dates.
4. **List Formatting**: Utilize WordPress’s visual editor or a markdown editor to re-establish proper list formatting. You might need to manually go through and apply list tags or styles to sections that were originally lists in TypePad.
Each of these steps should help clean up the migrated content effectively. If you need help with specific sections of text or have further issues, you might want to list those problems or provide samples for more detailed guidance.