diff --git a/providers/xmlprovider/library.go b/providers/xmlprovider/library.go
new file mode 100644
index 0000000..67b4039
--- /dev/null
+++ b/providers/xmlprovider/library.go
@@ -0,0 +1,15 @@
+package xmlprovider
+
+import "sync"
+
+type Library struct {
+	pmux   sync.Mutex
+	Parses []ParseMeta
+}
+
+func (l *Library) Latest() ParseMeta {
+	if len(l.Parses) == 0 {
+		return ParseMeta{}
+	}
+	return l.Parses[len(l.Parses)-1]
+}
diff --git a/providers/xmlprovider/xmlprovider.go b/providers/xmlprovider/xmlprovider.go
index 9a2f33a..e0d87f8 100644
--- a/providers/xmlprovider/xmlprovider.go
+++ b/providers/xmlprovider/xmlprovider.go
@@ -62,6 +62,7 @@ func (p *XMLProvider[T]) Prepare() {
 	defer p.mu.Unlock()
 	// INFO: We take 1000 here as to not reallocate the memory as mutch.
 	p.Array = make([]T, 0, 1000)
+	p.Resolver.Clear()
 }
 
 func (p *XMLProvider[T]) Serialize(dataholder XMLRootElement[T], path string, latest ParseMeta) error {
@@ -82,15 +83,7 @@ func (p *XMLProvider[T]) Serialize(dataholder XMLRootElement[T], path string, la
 			p.Items.Store(id, &item)
 		}
 
-		// INFO: If the item has a GetReferences method, we add the references to the resolver.
-		if rr, ok := any(item).(ReferenceResolver[T]); ok {
-			for name, ids := range rr.References() {
-				for _, res := range ids {
-					res.Item = &item
-					p.Resolver.Add(name, res.Reference, res)
-				}
-			}
-		}
+		p.addResolvable(item)
 	}
 
 	p.Array = append(p.Array, newItems...)
@@ -131,6 +124,19 @@ func (p *XMLProvider[T]) Cleanup(latest ParseMeta) {
 
 	for _, item := range toappend {
 		p.Array = append(p.Array, *item)
+		p.addResolvable(*item)
+	}
+}
+
+func (p *XMLProvider[T]) addResolvable(item T) {
+	// INFO: If the item has a GetReferences method, we add the references to the resolver.
+	if rr, ok := any(item).(ReferenceResolver[T]); ok {
+		for name, ids := range rr.References() {
+			for _, res := range ids {
+				res.Item = &item
+				p.Resolver.Add(name, res.Reference, res)
+			}
+		}
 	}
 }
 
@@ -163,6 +169,14 @@ func (a *XMLProvider[T]) String() string {
 	return s
 }
 
+func (p *XMLProvider[T]) Info(id string) ItemInfo {
+	info, ok := p.Infos.Load(id)
+	if !ok {
+		return ItemInfo{}
+	}
+	return info.(ItemInfo)
+}
+
 func (p *XMLProvider[T]) Item(id string) *T {
 	item, ok := p.Items.Load(id)
 	if !ok {
diff --git a/xmlmodels/library.go b/xmlmodels/library.go
index 2e429ee..0009a11 100644
--- a/xmlmodels/library.go
+++ b/xmlmodels/library.go
@@ -21,8 +21,8 @@ const (
 )
 
 type Library struct {
-	mu     sync.Mutex
-	Parses []xmlprovider.ParseMeta
+	mu sync.Mutex
+	xmlprovider.Library
 
 	Agents     *xmlprovider.XMLProvider[Agent]
 	Places     *xmlprovider.XMLProvider[Place]