In WordPress 5.7, two main changes affected the WordPress built-in import/export feature.
A new export specific filterFilter Filters are one of the two types of Hooks https://codex.wordpress.org/Plugin_API/Hooks. They provide a way for functions to modify data of other functions. They are the counterpart to Actions. Unlike Actions, filters are meant to work in an isolated manner, and should never have side effects such as affecting global variables and output. for post title
WP 5.7 introduces creates an export-specific filter for post titles.
Since WordPress 2.5 and 2.6, post_content and post_excerpt have both had export-specific filters: the_content_export, and the_excerpt_export, respectively. post_title, however, has used the_title_rss, which behaves differently in
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