# C1239 — Recover the unrounded source partition behind130 plus800

## Question

Which interval changes produce the two-part recapitulation?

## Inputs

```json
{}
```

## Sources

```json
[
  "C1234",
  "C1236",
  "File51a §7A.4"
]
```

## Opened utc

2026-09-28T05:40:47.712589+00:00

## Results

```json
{
  "partition": {
    "path": "model/Moses_postflood_partition_residuals.json",
    "sha256": "ea4867aadb57486cb8c9f9d0698491cbf2304a0e6b644b303da9a4567b7af00b",
    "bytes": 1346
  },
  "actual": [
    129,
    801
  ],
  "rounded": [
    130,
    800
  ]
}
```

## Finding

The source partition129|801 becomes130|800. Eber contributes+1 beforeReu; Reu−2 andNahor+1 contribute−1 afterward, while Jacob−1 andJoseph+1 cancel in the tail.

## Reassessment

Show why the whole930 is conserved while its internal cut changes.

## Checks

```json
{
  "actual129801": true,
  "rounded130800": true,
  "conserved930": true
}
```

## Closed utc

2026-09-28T05:40:47.714087+00:00

## Record provenance

Exact record hash: `f0c72be49d98083798a6eb1fec6c9f5a9e9c03f046c76b44d2226bebf86f607b`

Source journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`