diff --git a/NEWS.md b/NEWS.md
index 7e78e7519..cb66cb0a5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,8 @@
 # Version 7.11.0.9000
 
+## Bug fixes
+
+* Restrict static transforms so they only use the upstream part of the plan (#1199, #1200, @bart1).
 
 # Version 7.11.0
 
diff --git a/R/igraph.R b/R/igraph.R
index 85eca2591..a0c94cb60 100644
--- a/R/igraph.R
+++ b/R/igraph.R
@@ -18,6 +18,15 @@ downstream_nodes <- function(graph, from) {
   )
 }
 
+upstream_nodes <- function(graph, from) {
+  nbhd_vertices(
+    graph = graph,
+    vertices = from,
+    mode = "in",
+    order = igraph::gorder(graph)
+  )
+}
+
 nbhd_graph <- function(graph, vertices, mode, order) {
   vertices <- nbhd_vertices(
     graph = graph,
diff --git a/R/transform_plan.R b/R/transform_plan.R
index bcbb42205..8564d95f1 100644
--- a/R/transform_plan.R
+++ b/R/transform_plan.R
@@ -277,12 +277,15 @@ transform_plan_ <- function(
   plan$transform <- lapply(plan$transform, parse_transform)
   graph <- dsl_graph(plan)
   order <- igraph::topo_sort(graph)$name
+  subplans <- split(plan, f = plan$target)
   for (target in order) {
-    index <- which(target == plan$target)
-    rows <- transform_row(index, plan, graph, max_expand)
-    plan <- sub_in_plan(plan, rows, index)
-    old_cols(plan) <- old_cols
+    upstream_plan <- dsl_upstream_plan(target, graph, subplans)
+    index <- which(target == upstream_plan$target)
+    old_cols(upstream_plan) <- old_cols
+    subplans[[target]] <- transform_row(index, upstream_plan, graph, max_expand)
   }
+  plan <- drake_bind_rows(subplans)
+  old_cols(plan) <- old_cols
   plan <- dsl_trace(plan = plan, trace = trace)
   old_cols(plan) <- plan$transform <- NULL
   plan <- dsl_tidy_eval(plan = plan, tidy_eval = tidy_eval, envir = envir)
@@ -290,6 +293,11 @@ transform_plan_ <- function(
   plan
 }
 
+dsl_upstream_plan <- function(target, graph, subplans) {
+  upstream_targets <- upstream_nodes(graph, target)
+  drake_bind_rows(subplans[upstream_targets])
+}
+
 dsl_trace <- function(plan, trace) {
   if (!trace) {
     keep <- as.character(intersect(colnames(plan), old_cols(plan)))
diff --git a/tests/testthat/test-7-dsl.R b/tests/testthat/test-7-dsl.R
index 6fee3738d..430ba077e 100644
--- a/tests/testthat/test-7-dsl.R
+++ b/tests/testthat/test-7-dsl.R
@@ -3078,3 +3078,127 @@ test_with_dir("NAs removed from old grouping vars grid (#1010)", {
   )
   equivalent_plans(out, exp)
 })
+
+test_with_dir("static transforms use only upstream part of plan (#1199)", {
+  skip_on_cran()
+  radars <- c("radar1", "radar2")
+  seasons <- c("season1", "season2")
+  months <- c(1, 2)
+  radar_seasons <- expand.grid(
+    radar = radars,
+    season = seasons,
+    stringsAsFactors = FALSE
+  )
+  out <- drake_plan(
+    data = target(
+      get_data(radar, month),
+      transform = cross(radar = !!radars, month = !!months)
+    ),
+    to_cross = target(
+      list(data),
+      transform = combine(data, .by = radar)
+    ),
+    problem = target(
+      list(to_cross, season),
+      transform = cross(to_cross, season = !!seasons)
+    ),
+    separate = target(
+      list(radar, season),
+      transform = map(.data = !!radar_seasons)
+    ),
+    trace = TRUE
+  )
+  exp <- drake_plan(
+    data_radar1_1 = target(
+      command = get_data("radar1", 1),
+      radar = "\"radar1\"",
+      month = "1",
+      data = "data_radar1_1"
+    ),
+    data_radar2_1 = target(
+      command = get_data("radar2", 1),
+      radar = "\"radar2\"",
+      month = "1",
+      data = "data_radar2_1"
+    ),
+    data_radar1_2 = target(
+      command = get_data("radar1", 2),
+      radar = "\"radar1\"",
+      month = "2",
+      data = "data_radar1_2"
+    ),
+    data_radar2_2 = target(
+      command = get_data("radar2", 2),
+      radar = "\"radar2\"",
+      month = "2",
+      data = "data_radar2_2"
+    ),
+    problem_season1_to_cross_radar1 = target(
+      command = list(to_cross_radar1, "season1"),
+      radar = "\"radar1\"",
+      season = "\"season1\"",
+      separate = "separate_radar1_season1",
+      to_cross = "to_cross_radar1",
+      problem = "problem_season1_to_cross_radar1"
+    ),
+    problem_season2_to_cross_radar1 = target(
+      command = list(to_cross_radar1, "season2"),
+      radar = "\"radar1\"",
+      season = "\"season2\"",
+      separate = "separate_radar1_season2",
+      to_cross = "to_cross_radar1",
+      problem = "problem_season2_to_cross_radar1"
+    ),
+    problem_season1_to_cross_radar2 = target(
+      command = list(to_cross_radar2, "season1"),
+      radar = "\"radar1\"",
+      season = "\"season1\"",
+      separate = "separate_radar1_season1",
+      to_cross = "to_cross_radar2",
+      problem = "problem_season1_to_cross_radar2"
+    ),
+    problem_season2_to_cross_radar2 = target(
+      command = list(to_cross_radar2, "season2"),
+      radar = "\"radar1\"",
+      season = "\"season2\"",
+      separate = "separate_radar1_season2",
+      to_cross = "to_cross_radar2",
+      problem = "problem_season2_to_cross_radar2"
+    ),
+    separate_radar1_season1 = target(
+      command = list("radar1", "season1"),
+      radar = "\"radar1\"",
+      season = "\"season1\"",
+      separate = "separate_radar1_season1"
+    ),
+    separate_radar2_season1 = target(
+      command = list("radar2", "season1"),
+      radar = "\"radar2\"",
+      season = "\"season1\"",
+      separate = "separate_radar2_season1"
+    ),
+    separate_radar1_season2 = target(
+      command = list("radar1", "season2"),
+      radar = "\"radar1\"",
+      season = "\"season2\"",
+      separate = "separate_radar1_season2"
+    ),
+    separate_radar2_season2 = target(
+      command = list("radar2", "season2"),
+      radar = "\"radar2\"",
+      season = "\"season2\"",
+      separate = "separate_radar2_season2"
+    ),
+    to_cross_radar1 = target(
+      command = list(data_radar1_1, data_radar1_2),
+      radar = "\"radar1\"",
+      to_cross = "to_cross_radar1"
+    ),
+    to_cross_radar2 = target(
+      command = list(data_radar2_1, data_radar2_2),
+      radar = "\"radar2\"",
+      to_cross = "to_cross_radar2"
+    )
+  )
+  equivalent_plans(out, exp)
+})