minor touchups from manual testing (#4265)

#### Does this PR need a docs update or release note?

- [x] ✅ Yes, it's included

#### Type of change

- [x] 🐛 Bugfix

#### Issue(s)

* #3988

#### Test Plan

- [x] ⚡ Unit test
- [x] 💚 E2E

src/internal/m365/collection/groups/backup.go

@@ -12,7 +12,6 @@ import (
 	"github.com/alcionai/corso/src/internal/data"
 	"github.com/alcionai/corso/src/internal/m365/graph"
 	"github.com/alcionai/corso/src/internal/m365/support"
-	"github.com/alcionai/corso/src/internal/observe"
 	"github.com/alcionai/corso/src/internal/operations/inject"
 	"github.com/alcionai/corso/src/pkg/backup/metadata"
 	"github.com/alcionai/corso/src/pkg/control"
@@ -58,11 +57,6 @@ func CreateCollections(
 
 	ctx = clues.Add(ctx, "can_use_previous_backup", canUsePreviousBackup)
 
-	catProgress := observe.MessageWithCompletion(
-		ctx,
-		observe.Bulletf("%s", qp.Category))
-	defer close(catProgress)
-
 	channels, err := bh.getChannels(ctx)
 	if err != nil {
 		return nil, false, clues.Stack(err)

src/internal/m365/service/groups/backup.go

@@ -67,9 +67,14 @@ func ProduceBackupCollections(
 			break
 		}
 
+		catStr := scope.Category().PathType().String()
+		if scope.Category().PathType() == path.ChannelMessagesCategory {
+			catStr = "messages"
+		}
+
 		progressBar := observe.MessageWithCompletion(
 			ctx,
-			observe.Bulletf("%s", scope.Category().PathType()))
+			observe.Bulletf("%s", catStr))
 		defer close(progressBar)
 
 		var dbcs []data.BackupCollection

src/pkg/backup/details/groups.go

@@ -65,7 +65,7 @@ func (i GroupsInfo) Headers() []string {
 	case SharePointLibrary:
 		return []string{"ItemName", "Library", "ParentPath", "Size", "Owner", "Created", "Modified"}
 	case GroupsChannelMessage:
-		return []string{"Message", "Channel", "Replies", "Creator", "Created", "Last Response"}
+		return []string{"Message", "Channel", "Replies", "Creator", "Created", "Last Reply"}
 	}
 
 	return []string{}
@@ -86,13 +86,18 @@ func (i GroupsInfo) Values() []string {
 			dttm.FormatToTabularDisplay(i.Modified),
 		}
 	case GroupsChannelMessage:
+		lastReply := dttm.FormatToTabularDisplay(i.LastReplyAt)
+		if i.LastReplyAt.Equal(time.Time{}) {
+			lastReply = ""
+		}
+
 		return []string{
 			i.MessagePreview,
 			i.ParentPath,
 			strconv.Itoa(i.ReplyCount),
 			i.MessageCreator,
 			dttm.FormatToTabularDisplay(i.Created),
-			dttm.FormatToTabularDisplay(i.Modified),
+			lastReply,
 		}
 	}
 

src/pkg/selectors/groups.go

@@ -3,6 +3,7 @@ package selectors
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/alcionai/clues"
 
@@ -801,6 +802,10 @@ func (s GroupsScope) matchesInfo(dii details.ItemInfo) bool {
 	case GroupsInfoChannelMessageCreatedAfter, GroupsInfoChannelMessageCreatedBefore:
 		i = dttm.Format(info.Created)
 	case GroupsInfoChannelMessageLastReplyAfter, GroupsInfoChannelMessageLastReplyBefore:
+		if info.LastReplyAt.Equal(time.Time{}) {
+			return false
+		}
+
 		i = dttm.Format(info.LastReplyAt)
 	}