Summary not translated if body is empty

Sorry for the inconvenience. The problem was caused by a custom BodyFieldProcessor, which excluded the summary, if the value is empty.

The module works as expected.

The issue sounds more like a general tmgmt issue and not directly related to tmgmt_deepl, which only provides the translator plugin.
To confirm this, you can try tmgmt_Google as an alternative translator and create an issue in the tmgmt issue queue. Don‘t forget to link the issue as related issue in here.

If the error cannot be reproduced, leave a comment in here and i‘ll have a closer look.