diff --git a/ingestors/ingest_zone.py b/ingestors/ingest_zone.py
index 7cb552d..4b7c6cd 100644
--- a/ingestors/ingest_zone.py
+++ b/ingestors/ingest_zone.py
@@ -9,8 +9,10 @@ try:
 except ImportError:
     raise ImportError('Missing required \'aiofiles\' library. (pip install aiofiles)')
 
+
 default_index = 'dns-zones'
-record_types = ('a','aaaa','caa','cdnskey','cds','cname','dnskey','ds','mx','naptr','ns','nsec','nsec3','nsec3param','ptr','rrsig','rp','sshfp','soa','srv','txt','type65534')
+record_types  = ('a','aaaa','caa','cdnskey','cds','cname','dnskey','ds','mx','naptr','ns','nsec','nsec3','nsec3param','ptr','rrsig','rp','sshfp','soa','srv','txt','type65534')
+
 
 def construct_map() -> dict:
     '''Construct the Elasticsearch index mapping for zone file records.'''
@@ -61,6 +63,9 @@ async def process_data(file_path: str):
         async for line in input_file:
             line = line.strip()
 
+            if line == '~eof': # Sentinel value to indicate the end of a process (Used with --watch with FIFO)
+                break
+
             if not line or line.startswith(';'):
                 continue
 
@@ -76,14 +81,15 @@ async def process_data(file_path: str):
             
             ttl = int(ttl)
 
+            # Anomaly...Doubtful any CHAOS/HESIOD records will be found in zone files
             if record_class != 'in':
-                raise ValueError(f'Unsupported record class: {record_class} with line: {line}') # Anomaly (Doubtful any CHAOS/HESIOD records will be found)
+                raise ValueError(f'Unsupported record class: {record_class} with line: {line}')
 
             # We do not want to collide with our current mapping (Again, this is an anomaly)
             if record_type not in record_types:
                 raise ValueError(f'Unsupported record type: {record_type} with line: {line}')
 
-            # Little tidying up for specific record types
+            # Little tidying up for specific record types (removing trailing dots, etc)
             if record_type == 'nsec':
                 data = ' '.join([data.split()[0].rstrip('.'), *data.split()[1:]])
             elif record_type == 'soa':
@@ -93,11 +99,15 @@ async def process_data(file_path: str):
 
             if domain != last_domain:
                 if last_domain:
-                    struct = {'domain': last_domain, 'records': domain_records[last_domain], 'seen': time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime())}
+                    struct = {
+                        'domain'  : last_domain,
+                        'records' : domain_records[last_domain],
+                        'seen'    : time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime()) # Zone files do not contain a timestamp, so we use the current time
+                    }
                     
                     del domain_records[last_domain]
 
-                    yield {'_index': default_index, '_source': struct}
+                    yield {'_id': domain, '_index': default_index, '_source': struct} # Set the ID to the domain name to allow the record to be reindexed if it exists.
 
                 last_domain = domain
 
@@ -108,8 +118,6 @@ async def process_data(file_path: str):
 
             domain_records[domain][record_type].append({'ttl': ttl, 'data': data})
 
-    return None # EOF
-
 
 
 '''
@@ -125,13 +133,17 @@ Example record:
 
 Will be indexed as:
 {
-    "domain": "1001.vegas",
-    "records": {
-        "ns": [
-            {"ttl": 3600, "data": "ns11.waterrockdigital.com"},
-            {"ttl": 3600, "data": "ns12.waterrockdigital.com"}
-        ]
-    },
-    "seen": "2021-09-01T00:00:00Z" # Zulu time added upon indexing
+    "_id"     : "1001.vegas"
+    "_index"  : "dns-zones",
+    "_source" : {
+        "domain"  : "1001.vegas",        
+        "records" : { # All records are stored in a single dictionary
+            "ns": [
+                {"ttl": 3600, "data": "ns11.waterrockdigital.com"},
+                {"ttl": 3600, "data": "ns12.waterrockdigital.com"}
+            ]
+        },
+        "seen"    : "2021-09-01T00:00:00Z" # Zulu time added upon indexing
+    }
 }
 '''
\ No newline at end of file