The evidence inventory lists a fibre sample that does not appear in any lab report. Where did it go?

Unsolved homicide from 1988 in Marion County, IN. The file remains open and contributors are re-examining the physical evidence inventory.
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Body discovered near Junip Creek; the county opens a homicide investigation.
Initial canvass closes without a named suspect; the case goes inactive.
A tip prompts a limited re-interview of two witnesses.
Ledger contributors reopen the evidence inventory and index the public record.
The evidence inventory lists a fibre sample that does not appear in any lab report. Where did it go?
Nobody ever pulled the impound log for the second vehicle named in the neighbour's statement. It is a public record and still available.
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