MariaDB 10.1.30, 10.2.11

[Erulezz]

The MariaDB project is pleased to announce the availability of MariaDB 10.1.30, the latest stable release in the MariaDB 10.1 series, as well as MariaDB Connector/C 2.3.4, the latest stable release in the MariaDB Connector/C 2.x series. See the release notes and changelogs for details.

Includes 1 security vulnerability fix.

https://mariadb.org/mariadb-10-1-30-mariadb-connector-c-2-3-4-now-available/
https://mariadb.com/kb/en/mariadb-10130-changelog/

I did get this warning;

Updating / installing...
1:MariaDB-common-10.1.30-1.el7.cent################################# [ 8%]
2:MariaDB-client-10.1.30-1.el7.cent################################# [ 17%]
3:MariaDB-server-10.1.30-1.el7.centwarning: /usr/lib/systemd/system/mariadb.service saved as /usr/lib/systemd/system/mariadb.service.rpmsave
################################# [ 25%]
4:MariaDB-devel-10.1.30-1.el7.cento################################# [ 33%]
5:MariaDB-shared-10.1.30-1.el7.cent################################# [ 42%]
6:MariaDB-compat-10.1.30-1.el7.cent################################# [ 50%]
Cleaning up / removing...

Looking in /usr/lib/systemd/system/ I have two files;

mariadb.service mariadb.service.rpmsave

Is this expected behavior?