Database entries

Hello together,
I’ve seen that my translated homepage (German to English) has in the database entrys like “trp_dictionary_de_de_en_us of 26 MiB
and “trp_original_strings” of 12 MiB.

Is there a option in the plugin to clear all NON USED entrys by Translatepress?
Because when I changed the original text I also changed the translation but the former text is still saved.

I found some things out:

-1. there are many many entries in the “original” row that aren’t translated – for example guest book entries that I haven’t and won’t translate.

-2. that there are also older strings from former “crawlings by Translatepress” that don’t exist anymore.

So my question:
Is there a good and reliable solution to change that without destroying the whole database?
Or is it necessary that translatepress gathers all strings on a page.
And what can I do with the renewed entries, that I have updated but both versions (the old and the new) still lay in the Database?

Best regards and thank you very much in advance!