In TransVirtual you have the ability to manually upload a file for import, to do this go to Import/Export > Administration > Manual Import, you will be presented with the below screen, either drag and drop your file or click and select the file to be uploaded as shown below.

In Manual Import preconfigured rules were defined by you to see them for instructions click
here.
1. Once you uploaded the file, then you will be presented with screen as below where you can see the file contents. Select your rule relating to this file from the dropdown on the right indicated below.
2. Now select the applicable Import type name and then click on Import Entire File as shown above.

Depending on the size of your file this may take a few minutes to process.
3. Once you completed the step 2 the import result summary will appear as shown below.