Hi @divrajsingh ,
/oak:index/damAssetLucene/tika node has "config.xml" causing the index to not include any assets with mime type (dc:format) "application/xml" to not be included in the index, this results in the query for referenced dita content to return zero results.
Added DefaultParser for <mime>application/xml</mime> fixed the issue and it actually extract and index the dita content. After reindexing the damAssetLucene with updated oak:index/damAssetLucene/tika/config.xml fixed the issue. Now the search and replace functionality returning the results.
Thank you..