Just in case it's useful in determining the cause for the corruption, here's a diff over sorted lists:
$ diff -U 20 *_.json
--- direct_.json 2024-10-04 16:52:12.750114924 +0200
+++ via-cups_.json 2024-10-04 16:51:59.521916969 +0200
@@ -1,26 +1,33 @@
- "custom_max_8.5x14in",
+ "",
+ "",
+ "custom_199.9x151.05mm_199.9x151.05mm",
+ "custom_max_5x14in",
"custom_min_3.5x5in",
"iso_a4_210x297mm",
"iso_a5_148x210mm",
"iso_a6_105x148mm",
"iso_b5_176x250mm",
"iso_c6_114x162mm",
"iso_dl_110x220mm",
"jis_b5_182x257mm",
"jpn_chou3_120x235mm",
"jpn_chou4_90x205mm",
"jpn_hagaki_100x148mm",
- "jpn_oufuku_148x200mm",
- "jpn_photo-2l_127x177.8mm",
"na_5x7_5x7in",
"na_executive_7.25x10.5in",
"na_foolscap_8.5x13in",
"na_govt-letter_8x10in",
"na_index-4x6_4x6in",
"na_index-5x8_5x8in",
"na_invoice_5.5x8.5in",
"na_legal_8.5x14in",
"na_letter_8.5x11in",
"na_number-10_4.125x9.5in",
+ "oe_8-5x-13-fb_8.5x13in",
+ "oe_executive-fb_7.25x10.5in",
+ "oe_legal-fb_8.5x14in",
"oe_photo-l_3.5x5in",
- "om_small-photo_100x150mm",
+ "oe_statement-fb_5.5x8.5in",
+ "om_b-5-fb_175.94x249.94mm",
+ "om_envelope-c-6-fb_113.96x161.97mm",
+ "om_envelope-dl-fb_109.98x219.96mm",