P-CAD ASCII import missing last inner layer

Description

I have prepared a sample file PCAD-6L.pcb that is problematic in this strange way, which only happens with mentor exports

PCAD-6L.pcb

Currently KiCAD will place what normally be Inner1 on Inner2; and so on with final Inner4 being lost on import

Simply moving layerDef "BOTTOM" below inner layers in the text file makes KiCAD import all layers. Following is a file after such operation

PCAD-6L-bottom-moved.pcb

CAUTION: How actual order of layers is determined/specified is something I didn't figure out yet, but I'm getting hunch that mentor is somehow messing up the order.

KiCad Version

Application: KiCad PCB Editor

Version: (6.99.0-2087-gbb2fc2860a), release build

Libraries:
	wxWidgets 3.0.5
	FreeType 2.12.1
	HarfBuzz 4.3.0
	FontConfig 2.14.0
	libcurl/7.83.1 OpenSSL/1.1.1o zlib/1.2.12 brotli/1.0.9 zstd/1.5.2 libidn2/2.3.2 libpsl/0.21.1 (+libidn2/2.3.0) libssh2/1.10.0 nghttp2/1.47.0

Platform: Linux 5.17.9-arch1-1 x86_64, 64 bit, Little endian, wxGTK, , tty

Build Info:
	Date: Jun  4 2022 11:27:58
	wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.78.0
	OCC: 7.5.3
	Curl: 7.83.1
	ngspice: 36
	Compiler: GCC 12.1.0 with C++ ABI 1017

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON