Wrong ISRC code on track?

[spottydev]

Hi there.

If I query for track '40lnqXKcBImVDFRreFL2T0' using https://api.spotify.com/v1/tracks/{id} I get the following:

{
"artists": [
{
...
"name": "Yanni",
...
}
],
"external_ids": {
"isrc": "USVI29700009"
},
...
"id": "40lnqXKcBImVDFRreFL2T0",
"name": "Prelude",
...
}

But if I search for that ISRC using https://api.spotify.com/v1/search I get a completely different track:

{
"artists": [
{
...
"name": "Janet Jackson",
...
}
],
"external_ids": {
"isrc": "USVI29700009"
},
...
"id": "4GRlJIrmlDe91l7qp8ED2E",
"name": "Velvet Rope",
...
}

From what I can see the ISRC lookup is correct. Why is the wrong ISRC code attached to the track when I search for it by track id?

Thanks in advance!