diff --git a/libs/api/metadata-converter/src/lib/iso19139/read-parts.spec.ts b/libs/api/metadata-converter/src/lib/iso19139/read-parts.spec.ts
index 9e30c111e0..3a64318005 100644
--- a/libs/api/metadata-converter/src/lib/iso19139/read-parts.spec.ts
+++ b/libs/api/metadata-converter/src/lib/iso19139/read-parts.spec.ts
@@ -6,6 +6,7 @@ import GEOCAT_CH_DATASET from '../fixtures/geocat-ch.iso19139.dataset.xml'
 // @ts-ignore
 import GEOCAT_CH_SERVICE from '../fixtures/geocat-ch.iso19139.service.xml'
 import {
+  getUpdateFrequencyFromCustomPeriod,
   readContacts,
   readDistributions,
   readOnlineResources,
@@ -91,6 +92,18 @@ describe('read parts', () => {
         })
       })
     })
+    describe('getUpdateFrequencyFromCustomPeriod', () => {
+      it('keeps a partial weekly period', () => {
+        expect(getUpdateFrequencyFromCustomPeriod('P0Y0M2D')).toEqual({
+          updatedTimes: 3,
+          per: 'week',
+        })
+        expect(getUpdateFrequencyFromCustomPeriod('P0Y0M3D')).toEqual({
+          updatedTimes: 2,
+          per: 'week',
+        })
+      })
+    })
   })
 
   describe('dataset record', () => {
diff --git a/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts b/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts
index 674feff624..dfb1cc3590 100644
--- a/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts
+++ b/libs/api/metadata-converter/src/lib/iso19139/read-parts.ts
@@ -434,7 +434,7 @@ export function getUpdateFrequencyFromCustomPeriod(
   } else if (days <= 7) {
     return {
       per: 'week',
-      updatedTimes: Math.round(7 / days),
+      updatedTimes: Math.round(7 / days - 0.0001), // this is to make sure that 'every 2 days' = '3 times per week'
     }
   } else if (days) {
     return {
diff --git a/libs/api/metadata-converter/src/lib/iso19139/write-parts.spec.ts b/libs/api/metadata-converter/src/lib/iso19139/write-parts.spec.ts
index 12b4cd1009..1169c595b6 100644
--- a/libs/api/metadata-converter/src/lib/iso19139/write-parts.spec.ts
+++ b/libs/api/metadata-converter/src/lib/iso19139/write-parts.spec.ts
@@ -5,7 +5,11 @@ import {
   parseXmlString,
   xmlToString,
 } from '../xml-utils'
-import { writeDistributions, writeKeywords } from './write-parts'
+import {
+  getISODuration,
+  writeDistributions,
+  writeKeywords,
+} from './write-parts'
 import { GENERIC_DATASET_RECORD } from '../fixtures/generic.records'
 import { DatasetRecord } from '@geonetwork-ui/common/domain/model/record'
 
@@ -512,4 +516,21 @@ describe('write parts', () => {
 </root>`)
     })
   })
+
+  describe('getISODuration', () => {
+    it('keeps a partial weekly period', () => {
+      expect(
+        getISODuration({
+          updatedTimes: 3,
+          per: 'week',
+        })
+      ).toEqual('P0Y0M2D')
+      expect(
+        getISODuration({
+          updatedTimes: 2,
+          per: 'week',
+        })
+      ).toEqual('P0Y0M3D')
+    })
+  })
 })
diff --git a/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts b/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts
index 21b54ca1c0..b29dc6b599 100644
--- a/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts
+++ b/libs/api/metadata-converter/src/lib/iso19139/write-parts.ts
@@ -24,10 +24,8 @@ import {
   findChildOrCreate,
   findChildrenElement,
   findNestedChildOrCreate,
-  findNestedElement,
   findNestedElements,
   readAttribute,
-  readText,
   removeAllChildren,
   removeChildren,
   removeChildrenByName,
@@ -36,7 +34,6 @@ import {
 } from '../xml-utils'
 import {
   ChainableFunction,
-  combine,
   fallback,
   filterArray,
   getAtIndex,
@@ -220,7 +217,7 @@ export function getISODuration(updateFrequency: UpdateFrequencyCustom): string {
       else duration.hours = Math.round(24 / updateFrequency.updatedTimes)
       break
     case 'week':
-      duration.days = Math.round(7 / updateFrequency.updatedTimes)
+      duration.days = Math.round(7 / updateFrequency.updatedTimes - 0.0001) // this is to make sure that '2 times per week' = 'every 3 days'
       break
     case 'month':
       if (updateFrequency.updatedTimes <= 1) duration.months = 1