yes but california increased the delegation from 38 to 43 for the 1972 elections so the lines were redrawn anyways. I have the 1974 Almanac with me that shows the districts. There was a 12,000 population difference between the smallest and largest district. Aside from that, why did the lines have to be redrawn?
The California Supreme Court in Legislature of California v. Reinecke
(Brown v Reagan, Thirty-Two Members of United States House of Representatives v Reagan
) ordered that the 1972 legislative elections be conducted on the then then existing boundaries, and that the congressional elections be conducted on the boundaries passed by the legislature and vetoed by Reagan.
Reinecke was the Lieutenant Governor; Brown was Jerry Brown, Secretary of State at the time. At that time, the California Constitution still contained the old provisions for senate apportionment (no splitting of counties, no more than senator per county, no more than 3 counties per districts), as well as a Reapportionment Commission which would enact legislative redistricting in case the legislature itself did not. Reinecke as Lieutenant Governor would chair the commission.
The California Supreme Court ruled that the role of the reapportionment commission was not severable from the by-then unconstitutional provisions of legislative reapportioning. That is, the reapportionment commission could only enact plans that complied with the California Constitution, which would inherently violate the US Constitution. They also ruled that the governor was part of the legislative process, through his use of the veto, and so that there thus was no valid congressional or legislative plan.
As a temporary remedy (the decision was in January 1972, and the primary was in June), they ordered the use of the congressional plan approved by the legislature, since it provided for 43 districts, and was favored by a bipartisan majority of the incumbent representatives), and the then existing legislative plan (which must have been after the OMOV rulings).
They retained jurisdiction in case the legislature failed to enact a plan (which they didn't) and in 1973 drew their own maps for both the legislature and Congress.
At the present time, a court would probably act in time for court-drawn boundaries to be defined before any filing deadlines.