Transferring the site to the engine, how not to lose links?

Question

Heroku

Hello! Specialists tell me:
There is an ancient site - about 50 html pages. In the most natural way, the site received TIC 70, its pages are mentioned a lot. The domain remains, it's just that the link structure will be different, well, I'll remove the www atavism.
It's time to transfer it to the engine, WP for example.
Is it right to do so in order not to "fall out" from the index and not lose weight:
for example, I put the wp redirect plugin and for each old link www.site.com/o_nas.html (old address) I put a permanent redirect to site.com/about (new site)
Then, when the old site falls out of the index, I delete all these redirects and everyone is happy.

Answer 1

If I understood correctly, you are trying to push, but you did not specify what exactly.
Try like this:

git add .
git commit -m "Initial"
git push heroku master

If this was done, but did not help, try this:
git push heroku HEAD:master

Answer 2

Yes, but you don’t need to remove redirects, because no one will edit links on other sites.