Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
Are you sure it isn't service apache24 reload? The restart command, well, restarts Apache--it stops it, and then starts it. Existing connections are terminated, etc. Most services also have a "reload" command, which will reload its configuration while still running. If the Apache24 service supports it, that would be the one to use.