Yes I guess you can do that, if after updating you export properly from After Effects :
I took this from 'Help' and here is the whole article :
Create Motion Graphics templates with Essential Graphics panel
Open Motion Graphics templates as a project
To edit your After Effects Motion Graphics template (.mogrt files), you can open them in After Effects as a Project file. After you edit the template, re-export it as a .mogrt file.
To open a Motion Graphics template as a project, use the following steps:
Select File > Open Project.
In the
Open Project dialog, select a .mogrt file, then click
Open.
When you open a .mogrt as a project, After Effects extracts the project file and assets. In the
Extract "<filename>.mogrt" dialog, choose a location to extract the .mogrt contents, then click
Extract.
You can also modify a Motion Graphics template used in a sequence in Premiere Pro 12.1 with the following steps:
- In After Effects, open the .mogrt file as a project. Modify one or more compositions, or add or change controls in the Essential Graphics panel.
- After you make the edits, in the Essential Graphics panel, click Export Motion Graphics Template button. You can either replace the original .mogrt file or select a new location or name for the updated file.
- In Premiere Pro, hold Option (MacOS) or Alt (Win) and drag the new or updated .mogrt from the Browse tab of the Essential Graphics panel and over the existing .mogrt clip in the sequence. Premiere Pro updates the Edit tab of the Essential Graphics panel with the new controls.