Kakiop wrote:
Wow SG, this frankly is over my head
Almost certainly not over your head. It takes about the same skills as posting here. Type, click, pick from a menu, etc.. That's usually all it takes to use a script. And setting one up with instructions like those in my post above take about a half a minute.
Here's all I have to do now to remove numbers and leave the formulas....

Templates are great if you want to start from scratch each time. But they're not always so great if you want want to keep information from multiple periods in the same document, so that formulas can use it efficiently.
The advantage of a script is that you can target which cells you want to clear and which ones you don't. A template is all or nothing.
I'm a big believer in working smarter, not harder.
And learning new things, especially something as simple as running a script (as opposed to writing one), can lead to working smarter.😀
SG