Reverted the last commit, noting that the implementation physically
copies the dnwell and subcut layers up the hierarchy, which is not
a proper use of "copyup", as it creates unnecessary redundant layout
that, in theory, should have no impact on the extraction.  This may
have at one time worked around an issue in magic's extractor.  If
there is still an extraction issue, then the problem needs to be
fixed in magic, not with a workaround.  If really needed, it should
be recast as an extraction variant so as not to interfere with
normal use of the extractor.

VERSION

diff --git a/VERSION b/VERSION
index fa8116d..4cb34c1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.329
+1.0.330

sky130/magic/sky130.tech

diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index 299f9e9..76e92f8 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -2460,17 +2460,10 @@
  variants *
  labels SUBPIN port
 
- templayer alldnwell DNWELL,lowerdnwell
- copyup lowerdnwell
-
- layer dnwell DNWELL,lowerdnwell
+ layer dnwell DNWELL
  labels DNWELL
 
- templayer alliso SUBCUT,loweriso
- copyup loweriso
-
- layer isosub SUBCUT,loweriso
- and-not DNWELL,lowerdnwell
+ layer isosub SUBCUT
  labels SUBCUT
 
  layer npn DNWELL