How to avoid the Format Painter mode automatically dismissed when text is updated?

JDYNG 

Hi - this is not an answer to maintaining the format painter, but it may assist you with doing many edits as described.

Use keyboard shortcuts (much better for multiple repetitive actions anyway). You can still use in conjunction with mouse selection if needed.

Keyboard only

- Select the text with format you wish to copy

- Use Ctrl+Shift+C to copy a format * 

- Find and select the text you wish to format

- Use Ctrl+Shift+V to paste a format

- Edit text

- Continue to use Ctrl+Shift+V to paste a format (it will paste the format of the last copied text)

*(Ctrl-C will copy the text including the format - just ensure you use Ctrl-Shift-V to paste only the format)

You will be able to add and delete text, but the clipboard will still have the format in it, so you can continue to use Ctrl+Shift+V subsequently.

Mix with mouse selection

Some people just prefer mouse usage as much as possible (but trust me - keyboard is way faster and probably less RSI), so you can select text with the format you wish to copy and use mouse right-click for copy and then use mouse to select the text you wish to format, but then you must still use Ctrl+Shift+V for paste format (I cannot find "format only" anywhere in the paste special or paste menu drop down - like it is in Excel).

I hope this helps.