CADStar to Kicad importer Error on initial conversion

Description

When attempting to import the attached file the following error is reported: Error loading schematic "C:....\TestProj.csa". Unknown Parameter 'SIGNALREF' in 'ATTRNAME -> Signal Ref'

The attached csa is a cut down portion of a larger schematic. When creating a fresh schematic comprised of three heirarchical pages with cross-page connections I was unable to recreate the error.

TestProjB.csa

Steps to reproduce

KiCad Version

Application: KiCad
Version: (5.99.0-8300-gfc7f1d1d86), release build
Libraries:
	wxWidgets 3.0.5
	libcurl/7.71.0 OpenSSL/1.1.1g (Schannel) zlib/1.2.11 brotli/1.0.7 libidn2/2.3.0 libpsl/0.21.0 (+libidn2/2.3.0) libssh2/1.9.0 nghttp2/1.41.0
Platform: Windows 10 (build 18363), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
	Date: Jan 10 2021 22:02:06
	wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8)
	Boost: 1.73.0
	OCE: 6.9.1
	Curl: 7.71.0
	ngspice: 32
	Compiler: GCC 10.2.0 with C++ ABI 1014
Build settings:
	KICAD_SCRIPTING=ON
	KICAD_SCRIPTING_MODULES=ON
	KICAD_SCRIPTING_PYTHON3=OFF
	KICAD_SCRIPTING_WXPYTHON=ON
	KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
	KICAD_SCRIPTING_ACTION_MENU=ON
	KICAD_USE_OCE=ON
	KICAD_SPICE=ON