Download runtime version of rule used and create in bpm process

Dear experts,

does anybody know, if there is a possibility of updating used brm rules used in a bpm process? There seems to be a way, when you create a separate brm project:

Importing an Updated Project into the Rules Composer - Working with the Rules Manager - SAP Library

How does this work for rules coming from bpm?

Do i really have to manually export and import things e. g. over excel for this?

Regards,

Markus