Three fixes in Backup / Export / Install, validated end-to-end on the win11 VM
against a seeded HKCU\SOFTWARE\Mitutoyo\Formtracepak key carrying all five
registry value types (String, DWord, ExpandString, MultiString, Binary).
1. Registry corruption on REG_BINARY / REG_MULTI_SZ restore
Backup wrote those values to registry_values.csv via [string]$val, which
lossily coerces a byte[] to "System.Byte[]" and a string[] to a
space-joined scalar. Install's CSV restore loop runs AFTER the .reg file
import (which is lossless), so the CSV pass overwrites the good values
with corrupted strings. Two-part fix:
- Backup: skip Binary / MultiString / None / Unknown when writing the CSV.
Only String, ExpandString, DWord, QWord roundtrip cleanly through
New-ItemProperty -PropertyType, so capture only those. The .reg file
remains authoritative for the rest.
- Install: defensive filter on the CSV restore loop that skips any row
whose Type is not in {String, ExpandString, DWord, QWord}. This catches
legacy CSVs already on the share that were taken before this fix.
2. v6.213 vendor install path not scanned / not restored to
The per-bay FormTracePak install (commit 54dddaa) lands under
C:\Program Files (x86)\MitutoyoApp\Formtracepak, but the search-path
lists in Backup + Export only covered C:\...\Mitutoyo (no MitutoyoApp).
Result: a backup taken on a freshly imaged v6.213 bay produced Config
Files = 0 because the script never looked at the actual install dir.
Added MitutoyoApp (x86 + native ProgramFiles) ahead of the legacy
paths in all three scripts.
3. Install $DefaultAppTargets fallback didn't include MitutoyoApp either,
so a restore from an OLDER bay (source path C:\Mitutoyo\...) onto a
freshly imaged v6.213 bay would fall back to ProgramFiles\Mitutoyo
(does not exist), miss the MitutoyoApp\Formtracepak tree, and write
the restored files into the first existing legacy path. Added the
MitutoyoApp entries at the top of the ordered fallback table.
Smoke tested on win11 VM: backup of all 5 reg types, then corrupt every
value, then Install -RestoreAll restores all 5 byte-exact (incl. REG_BINARY
DE-AD-BE-EF-CA-FE-BA-BE-01-02-03-04 and REG_MULTI_SZ alpha.smp/beta.smp/
gamma.smp). Verified legacy poison-CSV path triggers the defensive filter
and the .reg-imported values survive untouched. -DryRun confirmed
non-mutating. Idempotency confirmed via hash-skip.
a104cfdebb