2026-11-10 — Behavior change
A CSV File data source can now be split into one data source per value of a column. Split by Column, under General > Advanced Settings and in the upload panel after the first upload, creates a data source named<CSV name> - <value> for each value of the selected column, such as one per campaign, channel, or advertiser. Split data sources take their data and settings from the CSV File data source, update with every upload and file deletion, and show as Empty when their value is no longer in any file. A CSV can have up to 50 split data sources, and the split column cannot be changed once selected. Split data sources do not count toward the plan’s data source limit. See How to connect and FAQs for details.
2026-10-27 — Behavior change
Header row, bottom-row removal, and source currency settings are now available for CSV File data sources. Three fields were added under General > Advanced Settings: Header Row sets the row number where the column headers are (default1), Rows to Remove at Bottom sets how many rows at the end of the file to skip, such as total rows (default 0), and Currency sets the file’s source currency (default None, no conversion). The fields can be set when creating a data source and in the settings of an existing one, and existing data sources are unchanged until these settings are updated. Row settings apply from the next upload, so delete and re-upload a file to apply them to it; currency applies right away to data already uploaded. For conversion, set Type to Currency in Data Display on cost and revenue metrics, since CSV metrics have no Type set by default. See How to connect and FAQs for details.