Importing a maximum of one .tmx file at a time in online TM

When trying to import several .tmx files in a TM in Trados Live, I can only import one file at a time. This is quite time-consuming when a client shares multiple .tmx files.

Is this the default procedure in Trados Live at the moment? Is the workaround the following approach: create a TM on the desktop, import the .tmx batch, then upload the TM to be able to work in the cloud?