remove EEG channels from emptyroom when preparing it for maxwell filt…

…er (#1040)
mne-tools · Jan 17, 2025 · 1427c5f · 1427c5f
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diff --git a/docs/source/dev.md.inc b/docs/source/dev.md.inc
@@ -24,6 +24,7 @@
     2. cHPI filtering is now performed before movement compensation.
 
 - Fix bug where the ``config.proc`` parameter was not used properly during forward model creation (#1014 by @larsoner)
+- Fix bug where emptyroom recordings containing EEG channels would crash the pipeline during maxwell filtering (#1040 by @drammock)
 
 ### :books: Documentation
 

diff --git a/mne_bids_pipeline/_import_data.py b/mne_bids_pipeline/_import_data.py
@@ -467,6 +467,7 @@ def import_er_data(
         raw_ref.info["bads"] = bads
         raw_ref.info._check_consistency()
     raw_ref.pick_types(meg=True, exclude=[])
+    raw_er.pick_types(meg=True, exclude=[])
 
     if prepare_maxwell_filter:
         # We need to include any automatically found bad channels, if relevant.