diff --git a/src/snapshot_middleware/csv.rs b/src/snapshot_middleware/csv.rs
index b014b6ba..48288a5b 100644
--- a/src/snapshot_middleware/csv.rs
+++ b/src/snapshot_middleware/csv.rs
@@ -109,27 +109,17 @@ pub fn syncback_csv<'sync>(
 
         if !meta.is_empty() {
             let parent = snapshot.path.parent_err()?;
-            let meta_stem = snapshot.middleware
-                .and_then(|mw| {
-                    let ext = format!(".{}", crate::syncback::extension_for_middleware(mw));
-                    snapshot.path.file_name()
-                        .and_then(|n| n.to_str())
-                        .and_then(|s| s.strip_suffix(ext.as_str()))
-                        .map(str::to_owned)
-                })
-                .unwrap_or_else(|| {
-                    let name = &new_inst.name;
-                    let base = if crate::syncback::validate_file_name(name).is_err() {
-                        crate::syncback::slugify_name(name)
-                    } else {
-                        name.clone()
-                    };
-                    if base.to_lowercase() == "init" {
-                        format!("_{base}")
-                    } else {
-                        base
-                    }
-                });
+            let instance_name = &new_inst.name;
+            let base = if crate::syncback::validate_file_name(instance_name).is_err() {
+                crate::syncback::slugify_name(instance_name)
+            } else {
+                instance_name.clone()
+            };
+            let meta_stem = if base.to_lowercase() == "init" {
+                format!("_{base}")
+            } else {
+                base
+            };
             fs_snapshot.add_file(
                 parent.join(format!("{meta_stem}.meta.json")),
                 serde_json::to_vec_pretty(&meta).context("cannot serialize metadata")?,
diff --git a/src/snapshot_middleware/lua.rs b/src/snapshot_middleware/lua.rs
index 06c6855f..560523b4 100644
--- a/src/snapshot_middleware/lua.rs
+++ b/src/snapshot_middleware/lua.rs
@@ -158,27 +158,17 @@ pub fn syncback_lua<'sync>(
 
         if !meta.is_empty() {
             let parent_location = snapshot.path.parent_err()?;
-            let meta_stem = snapshot.middleware
-                .and_then(|mw| {
-                    let ext = format!(".{}", crate::syncback::extension_for_middleware(mw));
-                    snapshot.path.file_name()
-                        .and_then(|n| n.to_str())
-                        .and_then(|s| s.strip_suffix(ext.as_str()))
-                        .map(str::to_owned)
-                })
-                .unwrap_or_else(|| {
-                    let name = &snapshot.new_inst().name;
-                    let base = if crate::syncback::validate_file_name(name).is_err() {
-                        crate::syncback::slugify_name(name)
-                    } else {
-                        name.clone()
-                    };
-                    if base.to_lowercase() == "init" {
-                        format!("_{base}")
-                    } else {
-                        base
-                    }
-                });
+            let instance_name = &snapshot.new_inst().name;
+            let base = if crate::syncback::validate_file_name(instance_name).is_err() {
+                crate::syncback::slugify_name(instance_name)
+            } else {
+                instance_name.clone()
+            };
+            let meta_stem = if base.to_lowercase() == "init" {
+                format!("_{base}")
+            } else {
+                base
+            };
             fs_snapshot.add_file(
                 parent_location.join(format!("{meta_stem}.meta.json")),
                 serde_json::to_vec_pretty(&meta).context("cannot serialize metadata")?,
diff --git a/src/snapshot_middleware/txt.rs b/src/snapshot_middleware/txt.rs
index 9bb5dafa..5b024a14 100644
--- a/src/snapshot_middleware/txt.rs
+++ b/src/snapshot_middleware/txt.rs
@@ -58,27 +58,17 @@ pub fn syncback_txt<'sync>(
 
         if !meta.is_empty() {
             let parent = snapshot.path.parent_err()?;
-            let meta_stem = snapshot.middleware
-                .and_then(|mw| {
-                    let ext = format!(".{}", crate::syncback::extension_for_middleware(mw));
-                    snapshot.path.file_name()
-                        .and_then(|n| n.to_str())
-                        .and_then(|s| s.strip_suffix(ext.as_str()))
-                        .map(str::to_owned)
-                })
-                .unwrap_or_else(|| {
-                    let name = &new_inst.name;
-                    let base = if crate::syncback::validate_file_name(name).is_err() {
-                        crate::syncback::slugify_name(name)
-                    } else {
-                        name.clone()
-                    };
-                    if base.to_lowercase() == "init" {
-                        format!("_{base}")
-                    } else {
-                        base
-                    }
-                });
+            let instance_name = &new_inst.name;
+            let base = if crate::syncback::validate_file_name(instance_name).is_err() {
+                crate::syncback::slugify_name(instance_name)
+            } else {
+                instance_name.clone()
+            };
+            let meta_stem = if base.to_lowercase() == "init" {
+                format!("_{base}")
+            } else {
+                base
+            };
             fs_snapshot.add_file(
                 parent.join(format!("{meta_stem}.meta.json")),
                 serde_json::to_vec_pretty(&meta).context("could not serialize metadata")?,