NextReports Engine can select text data which may contain 'new line' characters like \r , \n or \r\n. These are well interpreted if report is generated in PDF or RTF. For Excel there was no posibillity until version 7.3.
If you have a character column with 'new line' characters, these will be replaced by Excel exporter. Exporter will also compute how many rows are present to know and to update the excel cell height accordingly.
Because this is a just a particular case, Excel exporter will not look to all texts for finding 'new line' characters. User has to select 'wrap text' cell property to true, to make searching active.