Award/e-vouchers easier while PPB complicated
My experience is:
After upgrade with e-voucers mileage was posted correctly
After PPB upgrade nothing and after online claim still nothing (Class not eligible for credit).
Got finally information from Lufthansa, that as after PPB upgrades alway will be issued new ticket with O or I or X booking class, then automatic systems can not find them. Only way is to send original e-ticket receipt and PPB issued e-ticket receipt and explanation that flights was upgraded via PPB program and after that is possible to get mileage posted.
That need to be sent via "E-mail to the Miles & More Service Team" on your Miles&More account. And upload the documents.
Will take around 2-4 weeks and finally miles will be posted.
Some month ago I got answer that miles for PPB upgraded flights will not be posted automatically in predictable future at all. Reason is new ticketing. And they do not think there is a technical solution for it at all. (OK, we all know, that technical solutions can be made, but I'm afraid nothing we can do on it).