As per the old Search endpoint deprecation and its replacement, it's no longer possible to retrieve more than 40 changelog/history data for a Work Item.

There's a workaround provided:

• https://developer.atlassian.com/changelog/#CHANGE-2046

How can I fetch more than 40 changelog items for an issue?

Use Get changelogs endpoint

GET /rest/api/3/issue/

Unknown macro: {issueIdOrKey}

/changelog

curl --location 'https://example-jira.atlassian.net/rest/api/latest/issue/BAR-1/changelog' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \`

However, this requires an additional API call. We understand that this can cause some additional steps for Customers while working with this new Search API.

We request that (perhaps by using some additional parameters?) this endpoint have its previous functionality and return all changelog/history records associated with the resulting Work Item.