[iossif]

Hello everybody,
this is my first post.
Thank you for Calibre!

I am lost with metadata editing.
After having done a very thorough clean-up of irrelevant tags, having changed the covers in a series to be all graphically similar and generally treated my epubs so that they are all beautifully organized, I made a copy of my library on a microSD card in order to read them on my android tablet.

There I discovered that all the old covers, and the old, messy tags where still there. Even though my Calibre library shows them all neat and nice.

I am imagining the original metadata on the epub file itself never gets changed, and all my changes are stored on the metadata.opf file.

Is there a way to put all the good stuff that's on the metadata.opf file, on the epub file itself?

(I searched and searched keyword metadata but I couldn't find relative discussions. If the answer has been supplied elsewhere and I just couldn't find it, please be so kind as to point me to it.)

Thank you!
Iossif