LCSC attributes not applied to subsheets

[thirtythreeforty]

Describe the bug With a hierarchical schematic, LCSC attributes are only added to the selected sheet, not sub-sheets.

To Reproduce Steps to reproduce the behavior:

1. Create a sheet with a subsheet. Add a part to this subsheet.
2. Assign a component number in jlcpcb-tools.
3. Export the LCSC part numbers to the main sheet.

Expected behavior I expect all the LCSC part numbers to be applied to the selected .kicad_sch, and all subsheets, recursively, referenced by that sheet.

KiCad Version

Application: KiCad x86_64 on x86_64

Version: 7.0.6, release build

Libraries:
    wxWidgets 3.2.2
    FreeType 2.13.1
    HarfBuzz 7.3.0
    FontConfig 2.14.2
    libcurl/8.1.2 OpenSSL/3.1.1 zlib/1.2.13 brotli/1.0.9 zstd/1.5.5 libidn2/2.3.4 libpsl/0.21.2 (+libidn2/2.3.4) libssh2/1.11.0 nghttp2/1.55.1

Platform: EndeavourOS Linux, 64 bit, Little endian, wxGTK, KDE, x11

Build Info:
    Date: Jul  7 2023 09:07:45
    wxWidgets: 3.2.2 (wchar_t,wx containers) GTK+ 3.24
    Boost: 1.81.0
    OCC: 7.6.3
    Curl: 8.1.2
    ngspice: 40
    Compiler: GCC 13.1.1 with C++ ABI 1018

Build settings:
    KICAD_USE_EGL=ON
    KICAD_SPICE=ON

[Bouni]

@computergeek1507 Please take a look if this is easy to fix ...

[Bouni]

@thirtythreeforty I hope for real API support for schematics in Kicad V8 (V7.99) soon so this gets a lot better to handle. At the moment its kind of hacky 😅