Werk #10878: Fix BI aggregation state export (Regression caused by #10879)

Component GUI
Title Fix BI aggregation state export (Regression caused by #10879)
Date Apr 6, 2020
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.0.0i1 1.6.0p12
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

The export of BI aggregation tree states e.g. using calls like check_mk/view.py?view_name=aggr_all&output_format=python) was broken in 1.6.0p11.

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