Finality of unchallenged assessment orders prevents reopening in later appeals; merger applies only to the same subject matter.

Issues decided in an earlier appealable order that was not challenged in time attain finality and cannot be reopened in an appeal from a later order on a different subject matter. The earlier order implementing remand directions on Form 25A and stock transfer was distinct from the later order giving effect to the High Court judgment on trade discount, so the assessee could not revive concluded matters in the later appeal. The doctrine of merger also did not apply because merger requires the later superior order to operate on the same subject matter as the earlier order. The revisions were therefore not maintainable to the extent they sought to disturb the final earlier order.

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Issues: (i) Whether the assessee could, in an appeal from the later order giving effect to the High Court judgment on trade discount, reopen issues already concluded by the earlier order passed in effect of the first appellate authority's and Tribunal's remand directions. (ii) Whether the doctrine of merger applied so as to merge the earlier assessment order dated 04.02.2008 with the later order dated 10.03.2010.

Issue (i): Whether the assessee could, in an appeal from the later order giving effect to the High Court judgment on trade discount, reopen issues already concluded by the earlier order passed in effect of the first appellate authority's and Tribunal's remand directions.

Analysis: The earlier order dated 04.02.2008 gave effect to the remand directions concerning Form 25A and stock transfer. Those issues were concluded by the appellate orders and, even assuming that the remand permitted challenge to the findings, the assessee did not file any appeal from that order. The later order dated 10.03.2010 arose only from the High Court judgment on trade discount and related to a different subject matter. Issues which had attained finality by failure to avail the statutory appeal could not be revived in an appeal confined to the later and distinct order.

Conclusion: The assessee could not reopen the issues concluded by the earlier unchallenged order in the appeal from the later order.

Issue (ii): Whether the doctrine of merger applied so as to merge the earlier assessment order dated 04.02.2008 with the later order dated 10.03.2010.

Analysis: The doctrine of merger operates only when an inferior order is supplanted by a superior order on the same subject matter. Here, the two orders dealt with different matters: the earlier order implemented the remand directions on Form 25A and stock transfer, while the later order implemented the High Court decision on trade discount. As the subject matter was not identical, there was no basis for merger.

Conclusion: The doctrine of merger did not apply.

Final Conclusion: The questions raised were answered in favour of the Revenue, and the revisions were not maintainable insofar as they sought to disturb issues that had already become final by failure to challenge the earlier order.

Ratio Decidendi: Issues decided in an earlier appealable order that is not challenged in time attain finality and cannot be reopened in a later appeal arising from a distinct order on a different subject matter; merger applies only where the subsequent order operates on the same subject matter as the earlier one.

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