Issue Plesk Upgrade Issues: 17.5 -> 17.8

[B_P]

While upgrading, I received the following messages:

Leaving 'diversion of /usr/lib/apache2/modules/mod_proxy.so to /usr/lib/apache2/modules/mod_proxy.so.orig by libapache2-mod-proxy-psa'
Leaving 'diversion of /usr/lib/apache2/modules/mod_proxy_fcgi.so to /usr/lib/apache2/modules/mod_proxy_fcgi.so.orig by libapache2-mod-proxy-psa'

In addition, the new files are (in contrast to the rest of the directory) executable. I guess this should not be the case?

Also, got the following message:

Configuration file '/etc/sw-cp-server/conf.d/plesk.inc'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
 ==> Keeping old config file as default.

--> How do I know what was changed and how the original file looks like (the new version does not seem to be stored anywhere).