1. Fortinet FortiManager Administration Guide 7.4.1
Page 371
"Synchronizing configuration". The guide discusses retrieving configuration and states
"You can retrieve the configuration of a device or VDOM... This is useful if the device configuration was changed locally on the device and you want to import the changes into the FortiManager system." The reloadconf command is a CLI method to force this retrieval and reload process.
2. Fortinet FortiManager CLI Reference 7.4.1
Page 218. Under the diagnose test deploymanager command tree
the reloadconf command is explicitly defined with the description: "Reload device configuration from the device." This confirms the action is a pull from the FortiGate to update the FortiManager database.