diff --git a/common.mk b/common.mk
index 7a7a3292..6bb9dce7 100644
--- a/common.mk
+++ b/common.mk
@@ -203,8 +203,7 @@ MFC_BASE_LOWERING_OPTIONS ?= emittedLineLength=2048,noAlwaysComb,disallowLocalVa
 # hack: when using dontTouch, io.cpu annotations are not removed by SFC,
 # hence we remove them manually by using jq before passing them to firtool
 
-$(SFC_LEVEL) $(EXTRA_FIRRTL_OPTIONS) &: $(FIRRTL_FILE)
-	echo none > $(SFC_LEVEL)
+$(EXTRA_FIRRTL_OPTIONS) &: $(FIRRTL_FILE)
 	echo "$(EXTRA_BASE_FIRRTL_OPTIONS)" > $(EXTRA_FIRRTL_OPTIONS)
 
 $(MFC_LOWERING_OPTIONS):
@@ -215,13 +214,11 @@ else
 	echo "$(MFC_BASE_LOWERING_OPTIONS),disallowPackedArrays" > $@
 endif
 
-$(FINAL_ANNO_FILE): $(EXTRA_ANNO_FILE) $(SFC_EXTRA_ANNO_FILE) $(SFC_LEVEL)
-	if [ $(shell cat $(SFC_LEVEL)) = low ]; then jq -s '[.[][]]' $(EXTRA_ANNO_FILE) $(SFC_EXTRA_ANNO_FILE) > $@; fi
-	if [ $(shell cat $(SFC_LEVEL)) = none ]; then cat $(EXTRA_ANNO_FILE) > $@; fi
+$(FINAL_ANNO_FILE): $(EXTRA_ANNO_FILE) $(SFC_EXTRA_ANNO_FILE)
+	cat $(EXTRA_ANNO_FILE) > $@
 	touch $@
 
-$(SFC_MFC_TARGETS) &: private TMP_DIR := $(shell mktemp -d -t cy-XXXXXXXX)
-$(SFC_MFC_TARGETS) &: $(TAPEOUT_CLASSPATH_TARGETS) $(FIRRTL_FILE) $(FINAL_ANNO_FILE) $(SFC_LEVEL) $(EXTRA_FIRRTL_OPTIONS) $(MFC_LOWERING_OPTIONS)
+$(SFC_MFC_TARGETS) &: $(TAPEOUT_CLASSPATH_TARGETS) $(FIRRTL_FILE) $(FINAL_ANNO_FILE) $(EXTRA_FIRRTL_OPTIONS) $(MFC_LOWERING_OPTIONS)
 	rm -rf $(GEN_COLLATERAL_DIR)
 	$(call run_jar_scala_main,$(TAPEOUT_CLASSPATH),tapeout.transforms.GenerateModelStageMain,\
 		--no-dedup \
@@ -232,12 +229,8 @@ $(SFC_MFC_TARGETS) &: $(TAPEOUT_CLASSPATH_TARGETS) $(FIRRTL_FILE) $(FINAL_ANNO_F
 		--annotation-file $(FINAL_ANNO_FILE) \
 		--log-level $(FIRRTL_LOGLEVEL) \
 		--allow-unrecognized-annotations \
-		-X $(shell cat $(SFC_LEVEL)) \
 		$(shell cat $(EXTRA_FIRRTL_OPTIONS)))
 	-mv $(SFC_FIRRTL_BASENAME).lo.fir $(SFC_FIRRTL_FILE) 2> /dev/null # Optionally change file type when SFC generates LowFIRRTL
-	@if [ $(shell cat $(SFC_LEVEL)) = low ]; then cat $(SFC_ANNO_FILE) | jq 'del(.[] | select(.target | test("io.cpu"))?)' > $(TMP_DIR)/unnec-anno-deleted.sfc.anno.json; fi
-	@if [ $(shell cat $(SFC_LEVEL)) = low ]; then cat $(TMP_DIR)/unnec-anno-deleted.sfc.anno.json | jq 'del(.[] | select(.class | test("SRAMAnnotation"))?)' > $(TMP_DIR)/unnec-anno-deleted2.sfc.anno.json; fi
-	@if [ $(shell cat $(SFC_LEVEL)) = low ]; then cat $(TMP_DIR)/unnec-anno-deleted2.sfc.anno.json > $(SFC_ANNO_FILE) && rm $(TMP_DIR)/unnec-anno-deleted.sfc.anno.json && rm $(TMP_DIR)/unnec-anno-deleted2.sfc.anno.json; fi
 	firtool \
 		--format=fir \
 		--export-module-hierarchy \
diff --git a/variables.mk b/variables.mk
index 3bebdb1a..ec1ceb94 100644
--- a/variables.mk
+++ b/variables.mk
@@ -228,7 +228,6 @@ sim_files              ?= $(build_dir)/sim_files.f
 # single file that contains all files needed for VCS or Verilator simulation (unique and without .h's)
 sim_common_files       ?= $(build_dir)/sim_files.common.f
 
-SFC_LEVEL ?= $(build_dir)/.sfc_level
 EXTRA_FIRRTL_OPTIONS ?= $(build_dir)/.extra_firrtl_options
 MFC_LOWERING_OPTIONS ?= $(build_dir)/.mfc_lowering_options