The source wrote (citation):

In connection with the publication of the second quarter 2019, the time series of the Labour Force Survey (LFS) have been revised back to 2008, as the LFS has implemented a new raising factor that uses more current ancillary information than previously. The new series are of a better quality than the original ones, and at the same time the main series are adjusted for the data breaks that occurred between 2015/2016 and between 2016/2017.

In response, we have:

1. Archived the predecessors (pre-revision) by renaming with an "_19" specifier, marking as “discontinued” in their description metadata, and segregating in the catalog.
2. Created one-to-one replacement series (post-revisions).
3. Added 7 series to complete the dataset
4. Revised the metadata on the new series
5. Synchronized our SA supplements.
6. Extended source reported data:
1. NSA Employment and Unemployment for regions; extended from 2007Q1 to 2008Q1
2. NSA and SA Employment and Unemployment for the nation; extended from 1996Q1 to 2008Q1
3. Extended the source reported Unemployment Rate for the nation using its identity; 1996Q1 to 2008Q1. 

Properties are unchanged.

The series reside in the historical catalog

• Labor and Wages » Labor force survey » by Status - Main aggregates
• Labor and Wages » Labor force survey » Employment by industry » Quarterly » DB07
• Labor and Wages » Labor force survey » Status by age group and sex » Levels|Rates
• Labor and Wages » Labor force survey » [DISCONTINUED] Revisions » by Status - Main Aggregated
• Labor and Wages » Labor force survey » [DISCONTINUED] Revisions » Employment by industry - DB07
• Labor and Wages » Labor force survey » [DISCONTINUED] Revisions » Status by age group and sex » Levels|Rates